--- title: PreEmptive Reviews meta_title: 'PreEmptive Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 49 reviews by the users' company size, role or industry to find out how PreEmptive works for a business like yours. aggregate_rating: rating_value: 4.6 review_count: 49 scale: '5' date_modified: '2026-07-07' parent_category: name: Application Security url: https://www.g2.com/categories/application-security --- # PreEmptive Reviews **Vendor:** Sembi **Category:** [Application Shielding Software](https://www.g2.com/categories/application-shielding) **Average Rating:** 4.6/5.0 **Total Reviews:** 49 ## About PreEmptive PreEmptive secures apps against IP theft, hacking, and tampering with multi-layered protection for .NET, Java, and JavaScript. PreEmptive expertly balances cost, convenience, & functionality to secure your applications, making them more resistant to data & IP theft, hacking, & tampering. Our quick-to-implement, premium solutions provide multilayered in-app protection: Dotfuscator for .NET & Xamarin DashO for Java & Android JSDefender for JavaScript Our multi-layered approach to binary code protection employs obfuscation, encryption, root detection, shielding, & tamper-proofing to defend against exploitation by both humans and machines. PreEmptive offers passive & active defense capabilities, safeguarding trade secrets & intellectual property (IP), reducing piracy & counterfeiting, & preventing tampering of code & sensitive data inspection. Easily integrating into .NET, MAUI, Java, & Android applications, PreEmptive helps you manage application risks and ensure regulatory compliance. PreEmptive delivers premium application shielding, seamlessly integrating into your development workflow to secure software, protect your organization, and safeguard your customers. Choose PreEmptive for comprehensive, intelligent app security ## PreEmptive Reviews ### 1. Outstanding Support and Effortless Usability **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Military | Small-Business (50 or fewer emp.) **Reviewed Date:** January 05, 2026 **What do you like best about PreEmptive?** The customer support, configurability, ease of use, capabilities. **What do you dislike about PreEmptive?** The added build time when obfuscating. This is not an issue with PreEmptive itself but rather a concequence of using additional tools during development. We get around this by using PreEmptive at the end of the development cycle. **What problems is PreEmptive solving and how is that benefiting you?** We like to build applications with dotnet which is decompilable. This means that our clients could potentially see our source code if it is not obfuscated. PreEmptive allows us to obfuscate our applications before deployment so that they are not useful after being decompiled. ### 2. A strong leader in its category **Rating:** 5.0/5.0 stars **Reviewed by:** Loïc C. | Founder, Small-Business (50 or fewer emp.) **Reviewed Date:** August 19, 2025 **What do you like best about PreEmptive?** I’ve been using Dotfuscator for over 20 years in critical third-party software development, and I’ve always considered it the category king. Our team has integrated it into various build pipelines, from local environments to CI systems, across different operating systems. Dotfuscator has consistently worked flawlessly in every situation. The engineering team continues to deliver innovation with a strong focus on security, making this product an indispensable component of professional-grade software delivery. **What do you dislike about PreEmptive?** The documentation for advanced configuration could be more comprehensive, as it does not fully reflect the product’s potential. **What problems is PreEmptive solving and how is that benefiting you?** Dotfuscator helps us protect sensitive intellectual property and critical business logic from reverse engineering and tampering. ### 3. The sales team was friendly and easy to work with. **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** March 26, 2025 **What do you like best about PreEmptive?** Diotfuscator is great for protecting your IP. **What do you dislike about PreEmptive?** No issues so far. We have been using the product for years and just renewed. **What problems is PreEmptive solving and how is that benefiting you?** This product helps us protect our IP ### 4. Easy to set up, and the support team is super responsive **Rating:** 4.0/5.0 stars **Reviewed by:** Munkh E. | DevOps Engineering Team Lead, Mid-Market (51-1000 emp.) **Reviewed Date:** June 26, 2024 **What do you like best about PreEmptive?** We were able to implement Dotfuscator for our .NET applications and it was easy setup and all required documents where available for us. Also the support from PreEmptive was super fast and responsive. The integration was smooth for our .NET applications and we use it frequently in our pipeline by automated manner. **What do you dislike about PreEmptive?** We did not see any downside of Dotfuscator for our apps. **What problems is PreEmptive solving and how is that benefiting you?** We had vulnariable/security issues on our application after we were scanned by security tools and Dotfuscator was a solution to knock down these issues. Now we have much more protected and shielded application in the field. ### 5. PreEmptive Protection **Rating:** 4.0/5.0 stars **Reviewed by:** Bikash P. | Penetration Tester/InfoSec Consultant , Small-Business (50 or fewer emp.) **Reviewed Date:** September 25, 2024 **What do you like best about PreEmptive?** PreEmptive Protection helps and provide Protection from being spam or form being ripped **What do you dislike about PreEmptive?** UI of PreEmptive Protection is that they have to work on it It's not easy to find something sometimes **What problems is PreEmptive solving and how is that benefiting you?** It provide me inside view of code ### 6. Good Product **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Biotechnology | Mid-Market (51-1000 emp.) **Reviewed Date:** June 25, 2024 **What do you like best about PreEmptive?** Dotfuscator does exactly what it claims to do. The Customer Support is excellent and answered all my questions. **What do you dislike about PreEmptive?** Dotfuscator was easy to use and set up; however, I thought the Online user's guide was somewhat rudimentary. It could use some more detail. **What problems is PreEmptive solving and how is that benefiting you?** Dotfuscator helps us keep our Intellectual Property secure. ### 7. Needed better understanding of Dotfuscator license options **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** July 09, 2024 **What do you like best about PreEmptive?** Absolutely needed for deployment of applications in which there is sensitive IP. **What do you dislike about PreEmptive?** No notable downsides - critical tool when algorithm protection is needed. **What problems is PreEmptive solving and how is that benefiting you?** Deploying software solutions where the reverse engineering of code needs to be avoided. ### 8. Highly recommend for JavaScript code security **Rating:** 5.0/5.0 stars **Reviewed by:** Usmangani P. | Sr. Project Manager, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** June 09, 2023 **What do you like best about PreEmptive?** Does an excellent job in securing your javascript source code. As the javascript code is open and vulnerable to security breaches. This tool does a tremendous job of securing your Javascript code. I Applied JSDefender to my Nodejs coding structure and does the perfect job of securing my code. **What do you dislike about PreEmptive?** - If you have used the eval() function in your code, then this tool JSDefender fails the protection. So try to avoid the eval() function in your javascript code if wanted to use this tool. - Pricing is a little bit high, but if you are OK with that, then it's good to go. **What problems is PreEmptive solving and how is that benefiting you?** This tool keeps hackers away from your javascript code which is more vulnerable as its open source coding. Does an excellent job in securing the application and the source code. ### 9. Powerful protection system **Rating:** 5.0/5.0 stars **Reviewed by:** Irina S. | Global Marketing Manager, Electrical/Electronic Manufacturing, Enterprise (> 1000 emp.) **Reviewed Date:** July 04, 2023 **What do you like best about PreEmptive?** JSDefender Security's malware and other threat prevention capabilities and ease of installation and configuration were appealing. Password management, ransomware protection, two-factor authentication, and mobile protection are also available. Companies also need proactive threat prevention from the software. This lightweight SW doesn't affect device performance, even vintage ones. simple to setup and accurate malware detection. **What do you dislike about PreEmptive?** Sometimes tasks fail for no obvious reason, and the only way to fix it is to run the task by hand. This can take a lot of time. JSDefender doesn't always take care of bugs, so you need to use a tool to remove the corrupt files. **What problems is PreEmptive solving and how is that benefiting you?** I know from experience that JSDefender is the fastest and most effective protection tool among many others. This will work on any device, even if it isn't very fast, without putting too much stress on the device. Just try it, and you'll see why it's one of the best things on the market right now. The detection engine can find threats that other tools miss. ### 10. Best JavaScript In-App Protection **Rating:** 5.0/5.0 stars **Reviewed by:** Satyaprakash S. | Antivirus Admin, Mid-Market (51-1000 emp.) **Reviewed Date:** October 28, 2023 **What do you like best about PreEmptive?** The on-premise obfuscation solution offered by the range of configuration choices was highly flexible and the integration process was simple. The outcome is a tool that precisely meets the needs of developers in our position and is easy to use and customizable. **What do you dislike about PreEmptive?** So yet, we haven't discovered any significant drawbacks to this product. **What problems is PreEmptive solving and how is that benefiting you?** Actually, our one of client organization was looking for a product that could protect on-premise Java Script applications and make easy integration with their solution, so JSdefender came in handy. ### 11. Security features and simple integration **Rating:** 5.0/5.0 stars **Reviewed by:** Matheus S. | Owner, Leisure, Travel & Tourism, Small-Business (50 or fewer emp.) **Reviewed Date:** October 11, 2023 **What do you like best about PreEmptive?** Dotfuscator provides a range of options and settings to protect our apps Its advantage is how it saves time in ensuring the security of our product. **What do you dislike about PreEmptive?** It difficult to evaluate the effectiveness of its protection. Additionally the lack of documentation is difficult when trying to utilize all the features and customize security levels. **What problems is PreEmptive solving and how is that benefiting you?** Dotfuscator plays a role in safeguarding our.NET & Xamarin applications, against engineering, intellectual property theft and piracy.We prioritize the safety and reliability of our code, which helps protect our business and prevents. ### 12. Most Recommended Javascript protection system **Rating:** 4.5/5.0 stars **Reviewed by:** Vipul p. | Software Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** August 30, 2023 **What do you like best about PreEmptive?** Best features of JSDefender which makes it one of the best js code protection system: - Easy to use and Lightweight as there is no affect to device performance. - Proactive security for Software. - Ransomware Protection. - Provide quick and easy integration to existing build. **What do you dislike about PreEmptive?** No negative feature experienced , met our needs successfully. **What problems is PreEmptive solving and how is that benefiting you?** Basic need for our use is security and reliability, This product provides us Security and Reliability with no device compatibility issues. The threat detection works best here, which get missed by other tools. ### 13. JSDefender and app protection **Rating:** 5.0/5.0 stars **Reviewed by:** Kanakam G. | Quality Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** November 13, 2023 **What do you like best about PreEmptive?** Jsdefender finds vulnerabilities in code when we perform SAST. Gives accurate threat report and almost less false positives **What do you dislike about PreEmptive?** Nothing as of now, JSDefender is moving towards right direction. **What problems is PreEmptive solving and how is that benefiting you?** Solves issues while writing JS and finds vulnerabilities at the implementation level, that can save applied from attackers. ### 14. JS Defender **Rating:** 5.0/5.0 stars **Reviewed by:** Usman S. | Software Tester, Mid-Market (51-1000 emp.) **Reviewed Date:** October 28, 2023 **What do you like best about PreEmptive?** It is very useful for protection of our JS code. It helps us to make out data more secure from theft. **What do you dislike about PreEmptive?** As of now I don't see anything to dislike. **What problems is PreEmptive solving and how is that benefiting you?** If i can say in short word it is a app that provides security to our data from misuse. ### 15. Best security solution for script based attacks and exploits **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer & Network Security | Mid-Market (51-1000 emp.) **Reviewed Date:** October 11, 2023 **What do you like best about PreEmptive?** They are likely the single solution provider for Javascript on the whole, which prevents scripts from getting used malicious in attacks and exploits **What do you dislike about PreEmptive?** JSDefender provides a unique solution but whereas there are still holes that has to be filled and improvements that to be made as the attackers evolve and threat landscape evolve they are using new techniques for exploiting js **What problems is PreEmptive solving and how is that benefiting you?** As previously mentioned they are providing a unique solution in making js more secure and free from used malicious activities or tampering ### 16. Dotfuscator quick and painless obfuscation **Rating:** 4.0/5.0 stars **Reviewed by:** Brian T. | Small-Business (50 or fewer emp.) **Reviewed Date:** September 05, 2023 **What do you like best about PreEmptive?** It was quick and painless when setting up our projects to obfuscate. **What do you dislike about PreEmptive?** Nothing, we had not problems when trying to setup our project. **What problems is PreEmptive solving and how is that benefiting you?** We are trying to protect our IP ### 17. JS defender review **Rating:** 4.5/5.0 stars **Reviewed by:** MALLESWARA RAO V. | Systems Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** October 30, 2023 **What do you like best about PreEmptive?** --> Tamper detection -->obfuscation techniques --> Control flow flattering -->dedicated support **What do you dislike about PreEmptive?** limited functionality complexity to setup **What problems is PreEmptive solving and how is that benefiting you?** code obfuscation and in-app protection and several other issues has been solved using JSdefender ### 18. Make JS code protected **Rating:** 4.5/5.0 stars **Reviewed by:** Ronak A. | Associate Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** November 02, 2023 **What do you like best about PreEmptive?** This is very helpful, makes code projected and hence, provides better security. **What do you dislike about PreEmptive?** Encoded techniques requires proper study to know where and how to apply. **What problems is PreEmptive solving and how is that benefiting you?** Made the code secure. ### 19. Best Recommended Javascript Protection System **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** November 02, 2023 **What do you like best about PreEmptive?** Best features of JSDefender which makes it one of the best js code protection system: -Data more secure from Theft - Gives Better security for Software applications. - Gives best Ransomware Protection. **What do you dislike about PreEmptive?** As of now I don't see any dislike, ALL Features are great **What problems is PreEmptive solving and how is that benefiting you?** The business problems we use JSDefender is to protect data from misue/theft/ransonware ### 20. It's not just the Product, it's the People! **Rating:** 4.5/5.0 stars **Reviewed by:** Greg D. | Infrastructure Engineer IV, Small-Business (50 or fewer emp.) **Reviewed Date:** April 12, 2022 **What do you like best about PreEmptive?** If you've been in the .Net Dev space for any time, you've probably heard of Dotfuscator. But what you might not know are the people behind it. I've been dealing with a number of them, from Sales to Support, and every single time I come away happy. They are not a company that takes their money and runs, instead continue to look for ways to help use it, use it better and improve their communication (and of course, their products!). Even when you submit what you think is a bug, and instead, it's that you are doing it wrong (not that that ever happened to me ;), they are professional and above all, friendly. **What do you dislike about PreEmptive?** I guess the "downside" of Dotfuscator is the number of options and configuration settings available. It's almost too good in that respect. That said, I wouldn't change the number of options, but maybe put a Dotfuscator for Dummies wizard in front for the first times... **What problems is PreEmptive solving and how is that benefiting you?** We are using it to obfuscate our .NET DLL's for ASP.NET sites being hosted on servers outside of our control, in this case by a third party application hosted in Azure. ### 21. Dotfuscator to the rescue!! **Rating:** 5.0/5.0 stars **Reviewed by:** Jeff G. | Application Support Manager, Enterprise (> 1000 emp.) **Reviewed Date:** April 14, 2022 **What do you like best about PreEmptive?** Dotfuscator is an amazing 'multi-purpose' piece of genius (e.g., includes software protection and hardening services for developers, architects, and testers), so it's hard to choose what I like best. However, our team's most pressing need was directly related to securing devices to detect if our application is running on a rooted Android device. If so, terminate and/or respond to sessions on these devices. **What do you dislike about PreEmptive?** We didn't hear about it sooner! A lot of time and effort would have been saved had we moved quicker to secure this product! **Recommendations to others considering PreEmptive:** Take the time to speak with the support representatives about your specific problem(s) upfront. They are EXTREMELY helpful and can open your eyes to a myriad of ways/methods to secure your application(s)! **What problems is PreEmptive solving and how is that benefiting you?** As I mentioned earlier, securing devices to detect if our application is running on a rooted Android device. However, once we researched the tool, we were ecstatic to see other benefits available to protect our application in multiple ways, creating a layered protection strategy. ### 22. Just getting started but the customer service got me off on the right foot. **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Farming | Small-Business (50 or fewer emp.) **Reviewed Date:** January 18, 2022 **What do you like best about PreEmptive?** Fairly new to development, but we love the offline functionality above all. It's great in a web-based world to have seamless transitions into an offline machine. **What do you dislike about PreEmptive?** We've not encountered a dislike yet as we're just getting started, which is a great thing when a new user and a new product combine forces. **What problems is PreEmptive solving and how is that benefiting you?** We are developing a proprietary application for a product that I'm prototyping. My work with Dotfuscator is elementary at this juncture but the confidence we have that our code is protected while my team can actually see the protection in action is amazing. ### 23. DotFuscator a great tool **Rating:** 5.0/5.0 stars **Reviewed by:** Sergio Antonio E. | POS Expert, Small-Business (50 or fewer emp.) **Reviewed Date:** July 25, 2018 **What do you like best about PreEmptive?** I really like to use this tool, it's easy to use, with many options to protect the source code, and a very good speed of processing. I used it for about 5 years withouth any problem on deployment environments. This tool really helped us to avoid the intellectual property stealing from some customers who rented the solution developed but required to install it on their own servers due security concerns. Tech support is always kind and helpful, when needed. **What do you dislike about PreEmptive?** I don't have things to add to this list, once I undestood how the software works and how the final results are generated, all my issues with it where fully solved. **Recommendations to others considering PreEmptive:** Don't doubt it, this is a great tool to do the task, When I was looking for this kind of tool, I tried all I can found, but his one was the exact choice to my requirements. The price is fair considering the solution it gives, and includes 1 year of upgrades and tech support. Also the renewal of support is about half price for an additional year and less buying 2 or 3 more. **What problems is PreEmptive solving and how is that benefiting you?** Source code protection against decompilers is always a must to do step when small companies develop customized solutions to other companies and the clients don't include the source code on the contract to lower the price of the development, so, to avoid the intellectual property stealing in this specific cases, this tool is really great help. ### 24. Great solution for professional protection of .NET applications **Rating:** 4.0/5.0 stars **Reviewed by:** Marc S. | Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** January 11, 2021 **What do you like best about PreEmptive?** Dotfuscator does what it says: It protects your .NET applications. There are many features. We just use the basic code obfuscation and this works great. Their support is very helpful if you encounter any issues or need help. As it is more or less an industry standard product, you can find plenty of tutorials and help online. Also the documentation is very good. Honestly, once put in place and set up, you could almost forget about it. Which is a good thing. **What do you dislike about PreEmptive?** All the obvious drawbacks of obfuscation apply: - Renaming and string encryption will take more time the bigger your .NET application gets. Luckily newer versions can be run in parallel on all of your assemblies so this speeds things up greatly. - The obfuscated assembly that you deploy to customers won't necessarily be the same that your developers are working with. Though it happened rarely, we encountered bugs due to renaming (obfuscation) that no developer saw before a release version was built and tested. - Production stack traces will show obfuscated code. But de-obfuscating stack traces is an integrated tool so it's not that big of a deal. Pricing is higher than we'd like, but it's a quality product for development of professional .NET software and you get what you pay for. **What problems is PreEmptive solving and how is that benefiting you?** We protect the source code of our .NET Windows desktop application. ### 25. Great experience with JSDefender's obfuscation **Rating:** 4.0/5.0 stars **Reviewed by:** Albert S. | Research Assistant, Small-Business (50 or fewer emp.) **Reviewed Date:** March 16, 2021 **What do you like best about PreEmptive?** Secure obfuscation of JavaScript source code and provides much flexibility for specific features and constraints when obfuscating code **What do you dislike about PreEmptive?** Documentation could be somewhat better and is sometimes vague on the individual features of specific obfuscation settings **What problems is PreEmptive solving and how is that benefiting you?** I mostly look to implement anti-bot and prevent fingerprint function analysis and tampering within my website. Larger websites might use a provider like Akamai for more robust capabilities but some simple obfuscated client-side functions for tokenizing and fingerprinting can prevent casual request automation. ### 26. Lighting fast implementation for added security **Rating:** 4.0/5.0 stars **Reviewed by:** Jeremy R. | Technical Operations Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** May 07, 2020 **What do you like best about PreEmptive?** My initial implementation of Dotfuscator was an attempt at obfuscation without any changes to the source code. I used the Dotfuscator config editor to create the config files using the default obfuscation configuration and added those to my source. Then by utilizing the private NuGet package on Microsoft's hosted build agents for Azure DevOps, I used the Dotfuscator CLI pipeline task to perform obfuscation on-demand during deployment. It took me only a matter of hours to put things together, and after obfuscating my assemblies using Dotfuscator, 100% of my integration tests passed on the first run. Due to this success, we are pursuing the obfuscation of our mobile code using Xamarin. **What do you dislike about PreEmptive?** Be cautious when adopting the latest version, as you may need to check compatibility between the product offerings. I was told that I could just swap in a new released version without requiring any changes to my configuration or pipeline. However, the update to 6.0.1 included breaking changes to the Visual Studio Marketplace CLi pipeline task I was using. I was forced to continue using the old version of the NuGet package (4.43.3) until the pipeline task is updated and released for compatibility with the new version of the private NuGet package. **Recommendations to others considering PreEmptive:** Obfuscation adds an extra layer of security to any distributed software. Dotfuscator makes it quick and easy to get up and running obfuscating software, while also provides an intricate level of custom configuration options for even deeper levels of security and customization. **What problems is PreEmptive solving and how is that benefiting you?** To serve a proof of technology demo, we are required to deploy our code to a customer's environment. In order to protect our intellectual property, we wanted to obfuscate the code, but were under a tight deadline. I was able to solve this problem in a matter of hours using Dotfuscator. An additional benefit is the ability with the same license to obfuscate our Xamarin code which we are now planning to do in the very near future. ### 27. Xamarin is a very good tools because it is very easy to program, on different platforms **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Services | Mid-Market (51-1000 emp.) **Reviewed Date:** January 26, 2021 **What do you like best about PreEmptive?** I consider that the most useful is the way of writing the code that apps can be made, that the code can be protected, it protects all the main families of mobile devices, from Android and iOS to Universal Windows **What do you dislike about PreEmptive?** I have little to use it and at the moment I have had no problem. **Recommendations to others considering PreEmptive:** I am in the evaluation stage of the application and I consider that it is highly recommended **What problems is PreEmptive solving and how is that benefiting you?** I am developing an app for a group of nutrition professionals and so far I have not run into any problems ### 28. Works as expected and devops-friendly **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** January 11, 2021 **What do you like best about PreEmptive?** We were able to protect xamarin-based mobile application easily. Compared to other products its easier to configure specially for xamarin technology and can be simply integrated into CI build pipelines **What do you dislike about PreEmptive?** We don't have any cons to share till now. **Recommendations to others considering PreEmptive:** Make good use of the trial period, you can test the protection and try it in automated builds with all features. Adding the license is easy afterwards. **What problems is PreEmptive solving and how is that benefiting you?** Xamarin application protection. Can't disclose features publicly. ### 29. DotfuscAWESOME! **Rating:** 5.0/5.0 stars **Reviewed by:** Mark G. | Senior Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** April 08, 2020 **What do you like best about PreEmptive?** Love the string encryption and removal features. It is great to know that my apps are protected **What do you dislike about PreEmptive?** It can be a bit tricky to automate between machines because of different file paths, but this won't be a problem if you have good communication with your team. **Recommendations to others considering PreEmptive:** Remember to turn on the features you want to use in the settings tab. I recommend trying out the string encryption and removal features. **What problems is PreEmptive solving and how is that benefiting you?** I've been able to remove sensitive data like API keys or DB connection strings from my source with Dotfuscator. People can no longer figure out how to gain access to my data because of this. ### 30. Quick and Simple JS Obfuscation **Rating:** 5.0/5.0 stars **Reviewed by:** Spencer B. | Small-Business (50 or fewer emp.) **Reviewed Date:** March 17, 2020 **What do you like best about PreEmptive?** JSDefender is able to be quickly integrated into existing build processes without any hassle. The documentation is clear, and the product has a variety of configuration options. The overall experience was pleasant and the tool actually does what it says it will do. The performance impact is negligible which is also very important in our use case. **What do you dislike about PreEmptive?** There is not much negative to say, this fit our needs exactly. **Recommendations to others considering PreEmptive:** Make use of the trial and do not be afraid to contact support. The technical support team is very knowledgeable and quick to respond. It is clear they are dedicated to helping you achieve your goals. **What problems is PreEmptive solving and how is that benefiting you?** We needed an on premise JavaScript obfuscator. We did not want to engage any third party services for both security an reliability purposes. With a local on prem solution we can ensure consistent reliable obfuscation without ever transmitting our source code to another party. ### 31. Great product; great service **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Construction | Small-Business (50 or fewer emp.) **Reviewed Date:** October 02, 2020 **What do you like best about PreEmptive?** Normally it's difficult to trust promises made by a sales representative. They usually promise great service, great product, great features, and tons of value. To my surprise, it was all true with Dotfucator. I could not be happier with the product and the excellent support team. **What do you dislike about PreEmptive?** The price is higher than I would like to pay, but I can see the value for high quality product and service. **What problems is PreEmptive solving and how is that benefiting you?** No issues. It does what it says it does. ### 32. Able to tackle our increasing security demands, without any sweat **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Medical Devices | Enterprise (> 1000 emp.) **Reviewed Date:** June 08, 2020 **What do you like best about PreEmptive?** Fine tuning of which assemblies to group together as friend assemblies - Easier for our internal testing. The mac build agent is a HUGE plus! **What do you dislike about PreEmptive?** Missing GUI configurator on Mac. We are running all CI/CD on mac hardware, and also developing our CI/CD pipelines on Mac. **What problems is PreEmptive solving and how is that benefiting you?** Harden runtime. Handle runtime tampering. Obfuscation of source code, and configurations Protect critical business secrets. Prevent feature enabling from outside our app. Prevent decompiling of our assemblies to generate "source code" Prevent ILSPY to snoop around the critical areas. ### 33. Very good balance between capabilities and pricing **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** May 08, 2020 **What do you like best about PreEmptive?** The tool is quite complete and has most of the features you would expect in an obfuscator solution: renaming, control flow obfuscation, string encryption, and the likes. It has anti tampering protections as well which I have not tested. Pricing was great before licensing changes and continues to be very good after. **What do you dislike about PreEmptive?** It is somehow complex to get to understand every little feature and configuration switch and you get the feeling you are not getting the best possible protection it is capable of, out of your own lack of knowledge. It should evolve to have an easier UI, better wizards and more online training material (videos, how-tos, etc.) in order to ease the learning curve. **What problems is PreEmptive solving and how is that benefiting you?** Android apps obfuscation. ### 34. Solid protection to Android app with good price **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** June 17, 2020 **What do you like best about PreEmptive?** * Good enough protection to Android app * Easy to integrate with build pipeline on cloud * Don't need to sign a long term * Affordable price **What do you dislike about PreEmptive?** * Lack of utilities to facilitate the investigation. * After installation on Mac, Dash-O can't automatically locate the JDK. Have to manually update the dashorc file to provide JDK path with DASHO_JAVA_HOME env variable. **What problems is PreEmptive solving and how is that benefiting you?** * Additional code obfuscation on top of R8. * Encrypt sensitive string * Tamper detection to avoid re-package the app * Root detection to react with rooted device users, for auditing and warning user the risk. ### 35. Obfuscator for Java and Android: Best security plugin to protect my source code **Rating:** 4.5/5.0 stars **Reviewed by:** Rihan P. | Android Developer, Computer Software, Mid-Market (51-1000 emp.) **Reviewed Date:** October 18, 2019 **What do you like best about PreEmptive?** Java obfuscator and android obfuscator works best for me to provide security to my android application source code from unauthorised decompilation and extraction of code, malicious cyber attacks as well as cracking of functions of the application. Other than that, it provides optimization and refactoring of my code by removing unwanted code such as unused methods, functions, variables etc. Also, it is very easy to integrate the obfuscator tool to my android application code. **What do you dislike about PreEmptive?** Obfuscator for Java and obfuscator for Android is a cost. The functionalities they provide are definitely worth to charge that price; however, I believe that it can be made more user acceptance. **Recommendations to others considering PreEmptive:** Java obfuscator and Android obfuscator provides security and protection to your source code. It is must consider tool on a very crucial aspect of security provision. I highly encourage every organizations to adopt it. **What problems is PreEmptive solving and how is that benefiting you?** I use Java and Andriod obfuscator in my code to refactor and optimize the code after the approval of the final build. It is our organization's policy to secure the data and code of the client's application before making it available for general users. Obfuscator is the best choice to cop up with this policy. ### 36. Reliable source code obfuscation **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Telecommunications | Enterprise (> 1000 emp.) **Reviewed Date:** June 01, 2020 **What do you like best about PreEmptive?** Easy and user friendly. Does what it promises and integrates well. Obfuscation/encryption are more than just jumbling names. **What do you dislike about PreEmptive?** The licensing structure was a bit hard to understand at first. **Recommendations to others considering PreEmptive:** Dotfuscator is very well integrated with what we do and has the backing of Microsoft. **What problems is PreEmptive solving and how is that benefiting you?** I need to share my programs with others and don't want to share the inner workings, which establish IoT type connections. That's information I don't want to share. ### 37. DashO Review **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care | Small-Business (50 or fewer emp.) **Reviewed Date:** May 28, 2020 **What do you like best about PreEmptive?** That we have a tool that allows us to obfuscate our app in order to protect our IP **What do you dislike about PreEmptive?** It can be a bit cumbersome to get setup, though the interface makes it easy get through things **What problems is PreEmptive solving and how is that benefiting you?** The problem we are solving is to protect our IP and give our competitors a hard time if they wanted to try to decompile our application ### 38. Very good obfuscation quality, very good support **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Games | Mid-Market (51-1000 emp.) **Reviewed Date:** May 05, 2020 **What do you like best about PreEmptive?** Control flow obfuscation is really good, really scramble the code and works out of the box. Command line tool easy to use. Obfuscation attributes easy to work with. **What do you dislike about PreEmptive?** Really slow to obfuscate, but it's the case for all obfuscator I tried. Cannot include only 1 namespace to obfuscate, only possible to exclude (or didn't find how). **What problems is PreEmptive solving and how is that benefiting you?** Needed to obfuscate a namespace in an assembly to hide it from public. ### 39. Great option for professional software deployment! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Oil & Energy | Small-Business (50 or fewer emp.) **Reviewed Date:** June 02, 2020 **What do you like best about PreEmptive?** I like the flexibility the tool offers. I can tailor my usage to suit several very different projects, internal and externally visible. **What do you dislike about PreEmptive?** The UI is quite slow, so one needs to become proficient with the XML configuration. **What problems is PreEmptive solving and how is that benefiting you?** We are using it for internal and external protection of desktop tools. ### 40. Easy to use tool with self describing features and a user friendly interface. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** June 05, 2020 **What do you like best about PreEmptive?** DashO gives a lot of options for obfuscation with different security levels. **What do you dislike about PreEmptive?** A warning to the user when he tries to obfuscate the already obfuscated file will be helpful. **What problems is PreEmptive solving and how is that benefiting you?** DashO helps us protect the confidentiality of our work. ### 41. Very good product. It helps us comply with all of security requriments **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Financial Services | Enterprise (> 1000 emp.) **Reviewed Date:** April 22, 2020 **What do you like best about PreEmptive?** That it comes with default security features. You don't have to know a lot to get your XML configuration files going. **What do you dislike about PreEmptive?** The interface is a little hard to figure out in the beginning. It could be more user friendly **Recommendations to others considering PreEmptive:** great product **What problems is PreEmptive solving and how is that benefiting you?** Security requirements. Prevents hacker from tampering with our products. ### 42. Pretty useful most of the time **Rating:** 4.0/5.0 stars **Reviewed by:** Pranalee A. | Consumer Insights Analyst Intern, Market Research, Mid-Market (51-1000 emp.) **Reviewed Date:** April 19, 2019 **What do you like best about PreEmptive?** The best thing is that the end user cannot obfuscate my code so that making some of the logic I have written uniquely to it. It has the capability to hide the user strings which are present in the code assembly so that no attacker can find the critical code patterns by checking the references in the binary file. They can’t break it even by using the time lock algorithm. **What do you dislike about PreEmptive?** I think it takes time to build the whole project. I wish there was a hot reload or module caching. The only concern was the pricing model. It doesn't have a standard model and they will send you a quote for what you need. Therefore, the payment depends on how much use you find the features of DashO. It is important that they change their pricing model. **Recommendations to others considering PreEmptive:** Look into the documentation but they have good examples. Improve their pricing strategy. **What problems is PreEmptive solving and how is that benefiting you?** We run a proprietary software base. Using this Obfuscator we are able to safeguard our code. Even thing like secret and client keys are safe. ### 43. Excellent Security Tool **Rating:** 4.5/5.0 stars **Reviewed by:** Amit Kumar B. | Senior Engineer, Management Consulting, Mid-Market (51-1000 emp.) **Reviewed Date:** March 25, 2019 **What do you like best about PreEmptive?** this is the excellent safety tool which secure the application of android .the best part of this application is that we can secure the data from hackers .this tool converts the data in the manner of digital codes that when hackers decrypted the information he get something different from the required data , which is the best one for safety of information.dasho converts the unprotected application into hardened application which is securly coded .this obfuscator makes the debugging of the data much more difficult.this application helps in watermarking , custom response to tamper , debugging and execution on rooted device.this is excellent application to secure piracy of data. **What do you dislike about PreEmptive?** security is more important and this application is providing that , so there is no point to describe its negative area. **Recommendations to others considering PreEmptive:** this application is the excellent security tool which is highly recommend by me on my personal experience.if others want to secure data , then this is the best one .definitely to say a perfect solution regarding security of apps.best part of this application is free trial which is worthy one ,to cross check and implement them. **What problems is PreEmptive solving and how is that benefiting you?** this application has the ability to reduce the risk associated with the issues of security control and their protection.this application provides a 24 hours chat regarding the issue of your account.this application provides a free trial feature so that one can check the efficiency of the application before actually installed by your app.this is the only application . in the newly released version , this application also works on debugging of calls which make them more safe and secure. ### 44. Obfuscator really protects your projects **Rating:** 4.0/5.0 stars **Reviewed by:** NAVULE P. | Consultant, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** April 19, 2019 **What do you like best about PreEmptive?** Java and Android Obfuscator by PreEmptive Solutions provide strict security to code and prevents exposing the custom developed code of the application. Tried breaking and looking at the code but this solution protects your code well. **What do you dislike about PreEmptive?** There should be well documented process available. Though the current approach is involved with steps, there should be a way for user interface to allow obfuscation. It would be good to have the features extended to android apps implemented via .net core and unity framework too. **What problems is PreEmptive solving and how is that benefiting you?** Try to protect the application specific code logic from being exposed to the hackers. Add custom alerts in case of breach of privacy of logic. ### 45. Excellent software to keep the java code safe and secure **Rating:** 5.0/5.0 stars **Reviewed by:** Lokender Y. | Software Developer, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** November 02, 2018 **What do you like best about PreEmptive?** DashO protects the apps in a very secure way and intelligently. It has various features to do so. The best features I like are Overload Induction to check the renaming of the variables, methods, classes, etc. The logic remains the same in the source code. It also provides advanced control flow feature. It destroys the code pattern which the de-compilers are using to create the code. The final code is exactly the same as the original but no de-compilers can guess the originally written code even by using high end technology. It has the capability to hide the user strings which are present in the code assembly so that no attacker can find the critical code patterns by checking the references in the binary file. They can’t break it even by using the time lock algorithm. **What do you dislike about PreEmptive?** I could not find anything to dislike in this tool. It serves the purpose it is created for. Only minor improvement can be in the overall price for the software. **Recommendations to others considering PreEmptive:** I would definitely recommend it to others who are looking for a reliable way to secure their apps. **What problems is PreEmptive solving and how is that benefiting you?** The best benefits I have realized is the Watermark feature to keep the track of any unauthorized copies created for your source code or software. It embeds the data like copyright information or unique identification no.’s. Neither it impacts the runtime behavior of your software nor does it increase the overall installation size of our software. It will not create any metal link which can lead to breakdown of your software. Also its pruning feature makes your code faster by analyzing the unused methods, variables, fields and removing them. In the released version, it will also remove the debugging calls so that it is safe and secure. ### 46. Java obfuscator secure the code **Rating:** 4.0/5.0 stars **Reviewed by:** Yogesh S. | Development Manager, Computer Software, Mid-Market (51-1000 emp.) **Reviewed Date:** April 17, 2019 **What do you like best about PreEmptive?** Easy to use obfuscator, the compiled code looks much secure, tried to decompile obfuscated code, but it was just some random line of code.i am relaxed. **What do you dislike about PreEmptive?** Even though obfuscating prevent understanding the of code via stack trace or something else, but anyone can easily mangled with the obfuscated code and can impact the application. It would be recommended to get the patent of code instead. **What problems is PreEmptive solving and how is that benefiting you?** It obfuscated code for my single project as my client have good team of professionals and I was worried if they could have decompile the application. ### 47. Useful platform **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Higher Education | Small-Business (50 or fewer emp.) **Reviewed Date:** April 17, 2019 **What do you like best about PreEmptive?** Java Obfusctor allows me to shrink code into a more readable format **What do you dislike about PreEmptive?** The technology behind Java Obfusctor is perfect for me but it could be more user friendly. **Recommendations to others considering PreEmptive:** If you're using code within your business, Java Obfuscator is really a great product to consider. Highly recommended! **What problems is PreEmptive solving and how is that benefiting you?** Biggest improvement is being able to show code to someone non-technical and have them understand it due to the short and concise . Also the ability to hide code and ensure that it is not subject to being stolen. ### 48. Best tool to protect your application **Rating:** 4.5/5.0 stars **Reviewed by:** Samir S. | MTS, Telecommunications, Enterprise (> 1000 emp.) **Reviewed Date:** May 04, 2018 **What do you like best about PreEmptive?** DashO is an excellent tool to protect the apps in various modules like IP theft, Data theft, and more. It helps in making my application solid proof to make it nearly impossible for reverse tracking and bypassing the licenses needed for the application. It makes the debugging very difficult for the hackers and they can't do any rooting on my device or change the security alerts. It is like a prevention rather than protection. You can easily prevent your app from hacking vulnerabilities by using DashO. **What do you dislike about PreEmptive?** It has all the features which I need. The only concern was the pricing model. It doesn't have a standard model and they will send you a quote for what you need. Therefore, the payment depends on how much useful you find the features of DashO. **Recommendations to others considering PreEmptive:** A perfect solution for protecting your app. **What problems is PreEmptive solving and how is that benefiting you?** It has the capability to reduce the risks associated with application security controls and protection. Also, it doesn't affect your application's performance at all and the quality of your app is intact. It provides protection against piracy via its feature auto-expiration. It doesn't allow inspection on the rooted devices. It provides 24*7 live chat support for any issues related to the security of your app or your account. You can be rest assured that there will be no data breach by any debugger as it has additional obfuscation like metadata stripping, extended string encryption, and more. It also provides a free trial so that you can check its features before actually using it for your app. ### 49. Good **Rating:** 5.0/5.0 stars **Reviewed by:** Nitin M. | Infy, Enterprise (> 1000 emp.) **Reviewed Date:** February 19, 2019 **What do you like best about PreEmptive?** Good language to learn for beginners very helpful and easy to understand **What do you dislike about PreEmptive?** User should get a free or trial version for testing purpose or educational purposes **What problems is PreEmptive solving and how is that benefiting you?** Nothing ## PreEmptive Discussions - [What is JSDefender – App Protection for JavaScript used for?](https://www.g2.com/discussions/what-is-jsdefender-app-protection-for-javascript-used-for) - 1 comment - [View PreEmptive pricing details and edition comparison](https://www.g2.com/products/preemptive/reviews?section=pricing&secure%5Bexpires_at%5D=2026-07-10+06%3A10%3A02+-0500&secure%5Bsession_id%5D=40a6fd90-87b7-41fa-8245-d90e778d65a4&secure%5Btoken%5D=2f12d3db7ac503732b7e476ef55afda56687948f3cc27f84d67ace5fbd2490a5&format=llm_user) ## PreEmptive Integrations - [LM-Kit.NET](https://www.g2.com/products/lm-kit-net/reviews) ## PreEmptive Features **Protect** - Login - Data Injections - Code - Certificate Exploitation - Advanced Awareness - Digital Content **Generative AI** - AI Text Summarization **Threat Detection & Response - Runtime Application Self-Protection (RASP)** - Threat Remediation - Threat Detection - Application Behavior Monitoring - Intelligence and Reporting **Execute** - Environment - Compliance - Cross-Platform Implementation ## Top PreEmptive Alternatives - [Dynatrace](https://www.g2.com/products/dynatrace/reviews) - 4.5/5.0 (1,231 reviews) - [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews) - 4.5/5.0 (590 reviews) - [Appdome](https://www.g2.com/products/appdome/reviews) - 4.8/5.0 (87 reviews)