CyStack Security Services Reviews & Provider Details

CyStack Security Services is a set of solutions to help businesses manage their digital security. We offer a clear way to check, fix and watch over a company's security to keep data and systems safe. Our services are for all kinds of businesses, from small startups to big companies, that need help with security. The main goal is to protect a business, stop data leaks, and meet industry standards. CyStack offers its services through two distinct models, each tailored to specific business needs: Security Assessment Consulting: - What it is: A one-time project to check your systems for weak points. - How it helps: You get a simple report with clear steps to improve your security. - Value: It helps you find and fix problems before they become a bigger issue. Managed Security Services (MSSP): - What it is: Ongoing, 24/7 security monitoring. - How it helps: A team of experts watches for threats and responds fast. - Value: It lowers the risk of cyberattacks and limits damage when an incident happens. No matter if you need a quick check or full-time protection, CyStack gives you the tools and support to secure your business and help it grow.

Provider Website

Seller

CyStack

Discussions

CyStack Security Services Community

Languages Supported

English, Vietnamese

Services Offered

Penetration Testing, Red Teaming, Infrastructure Audit, Performance Testing, Managed Bug Bounty

Overview by

Trung Nguyen

Pricing

Pricing provided by CyStack Security Services.

Threat Prevention

50 man-days With One-Time Purchase

View More Pricing Information

CyStack Security Services Media

CyStack Security Services Demo - CyStack Platform Access

Track vulnerabilities in real-time, manage fixes in one place, and integrate seamlessly with your existing workflow.

CyStack Security Services Demo - Actionable Report

Detail all identified vulnerabilities, ranked from Critical to Informational, with expert-backed fixes to secure your systems.

CyStack Security Services Demo - Validated Certifications

Confirm your systems meet industry security standards and compliance, backed by expert audits and rigorous testing.

CyStack Security Services Demo - Data Leaks Management

Users can view leak statistics, manage keywords, verify ownership, and track updates in real time—all within a clean, analytics-driven interface.

CyStack Security Services Demo - Incident by Source

Incident volume by source (bug bounty, pentest, vulnerability scans, device management, data leak detection) and lists the latest detected incidents with their type, source, status, and detection time.

CyStack Security Services Demo - Incident Management Overview

Analyze trends in status, severity, and classification to gain insights into vulnerabilities, policy violations and data leaks.

CyStack Managed Services take full ownership of your cybersecurity - from continuous monitoring and threat detection to expert-led incident response. We minimize risk, ensure uptime, and free your team to focus on what matters most: growth.

Protect the system behind 65 million payment cards issued annually worldwide with end-to-end by CyStack Infrastructure Audit and Security Assessment.

CyStack Security Platform - How our all-in-one cybersecurity solution can safeguard your digital assets with ease

raditional MSS tools protect your systems but often limit your visibility and response speed. CyStack MSS redefines how organizations manage cybersecurity — with real-time tracking, structured risk classification, and collaborative workflow

Official Downloads

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Managed Security Services for Your Business

CyStack Security Services Reviews (20)

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Leo N.

Enterprise (> 1000 emp.)

12/18/2025

"Exceptional Security Partner for High-Stakes Blockchain Projects"

5/5

What do you like best about CyStack Security Services?

We build and ship blockchain products for demanding clients, and CyStack is the team we call when failure is not an option. A good example is 1Ma**** – a network made by Vietnamese for Vietnamese, backed by leading financial and tech groups and tied to the country’s national blockchain strategy.

On projects like that, what I appreciate most is that CyStack doesn’t give us a pretty PDF and disappear. They pressure-test the design, find real issues (not theoretical noise), sit down with our engineers, and stay with us through remediation and re-testing. We’ve done multiple audits with them now, and the pattern is consistent: clear priorities, practical fixes, and no drama. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

“Dislike” is a bit strong. The reality is: good security teams are busy and demanding. With CyStack, you need to plan ahead for big projects like 1Matrix because their senior people get booked quickly. And they ask a lot of questions up front - architecture, edge cases, deployment quirks. If your team isn’t well-prepared, that can feel heavy. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

If you’re running a flagship or sensitive project - national infrastructure, regulated finance, anything that will be in the headlines - treat CyStack as part of your core delivery team, not a late-stage checkbox.

Loop them in early, especially on projects with the scale and visibility of 1Ma****. Share full context, give them real access, and put your senior engineers in the same room as their auditors. You’ll get far more value than just “passing an audit”; you’ll harden your architecture and avoid some very expensive surprises later. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

Cystack is our trusted partner in in many projects Review collected by and hosted on G2.com.

Response from Sơn Võ Thành of CyStack Security Services

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Thank you for taking the time to share such a thoughtful and candid review. We truly appreciate the trust you place in CyStack, especially on projects where the stakes are high and there’s no margin for error.

It means a lot to hear that our hands-on approach has been valuable to your team. That kind of collaboration is exactly how we believe security work should be done, particularly for large-scale and high-visibility blockchain initiatives. We also appreciate your honest note about planning ahead and the depth of our upfront questions. Your feedback motivates us to continue growing and further improving our processes.

From the team here at CyStack, we look forward to continuing to support your team and contributing to the success of your most critical projects in the near future.

Xuân M.

11/5/2025

"CyStack: Reliable Security with Seamless Integration"

5/5

What do you like best about CyStack Security Services?

I really appreciate CyStack Security Services for their strong capability in securing and monitoring our cloud infrastructure and web applications, which has been crucial for us over the past year. Their vulnerability scanning, website protection, and secrets management features are top-notch. Switching from another provider turned out great because CyStack offered more localized support, faster response times, and better integration with our existing infrastructure, which made our transition smooth and cost-effective. They took the time to understand our infrastructure and security workflow in detail, which truly sets them apart. CyStack has been instrumental in addressing major challenges like vulnerability management, data protection, secrets management, and continuous monitoring. Their seamless integration with our Kubernetes cluster and cloud systems is impressive—it operates efficiently without degrading performance, and it generates quick, actionable reports. It's a lightweight and developer-friendly solution that heightened our security with minimal effort. I highly value their expertise and proactive approach; their vulnerability assessments are detailed, and the team's practical recommendations are clear and useful rather than just raw data. The combination of automated scanning with manual verification ensures high accuracy with fewer false positives. I also appreciate CyStack's reliability, responsiveness, and deep technical expertise. Their team consistently provides high-quality insights, quick support, and solutions adaptable to our growing infrastructure. The sense of reliability and continuous monitoring without interruptions gives us great confidence. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

No problem Review collected by and hosted on G2.com.

Response from CyStack Customer Success of CyStack Security Services

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Thank you so much for sharing your experience and for trusting CyStack as your security partner. We’re thrilled to hear that our vulnerability management, secrets protection, and cloud monitoring solutions have added value to your infrastructure.

Our team takes pride in providing both strong technical capabilities and localized support, so it’s great to know those aspects stood out to you. We truly appreciate your recognition of our detailed assessments and fast response — feedback like this keeps us motivated to keep improving.

We’re glad to continue supporting your team’s growth and ensuring your systems stay secure and reliable.

Khanh H.

Software Engineer

11/3/2025

"Robust Security Audits with Unmatched Professionalism"

5/5

What do you like best about CyStack Security Services?

I have been using CyStack Security Services for over three years and have found their work extremely valuable. I am particularly impressed by their thoroughness in conducting security audits for our blockchain project, which helped identify and fix potential vulnerabilities in our smart contracts and system infrastructure. This, in turn, strengthened our project's security and built greater trust with our users and partners. I greatly value CyStack’s professionalism and attention to detail. Their audit reports are clear and easy to understand, with transparent steps for addressing issues. Additionally, the responsiveness of their team and their technical expertise make the entire engagement process smooth and reliable. CyStack's strong reputation and experience in the blockchain arena initially drew us to them, and their commitment to quality and consistent support has been reassuring. I appreciate their transparency and find their reliable support and commitment to quality as factors that make me confident in our ongoing partnership. My experience with CyStack has been so positive that I would unreservedly recommend them, rating my likelihood of recommending them a 10 out of 10. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

I've had a great experience with CyStack. One thing I'd love to see in the feature is more ongoing security monitoring or periodic re-audits to ensure long-term protection. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

CyStack Security Services helps us identify and fix vulnerabilities in our smart contracts and infrastructure, strengthens our project's security, and builds trust with users and partners. Their professionalism, detailed reports, and responsive support make the process smooth and reliable. Review collected by and hosted on G2.com.

Response from CyStack Customer Success of CyStack Security Services

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We truly appreciate your trust and partnership over the past years. It means a lot to know our audits have played a part in strengthening your project’s security and building user confidence.

Your feedback on ongoing monitoring and re-audits is spot-on and it’s something we’re actively working toward to support clients like you in the long run.

Thank you again for growing with us and for your continued confidence in CyStack.

Tạ Đức T.

Head of Security Services

Small-Business (50 or fewer emp.)

10/27/2025

"Exceptional security partner with world-class hacking expertise"

5/5

What do you like best about CyStack Security Services?

CyStack's technical team is excellent. They don't just run standard tests - they really think like attackers. They understand how modern applications are built and how to exploit business logic flaws, not just basic vulnerabilities. What impressed me most is their professionalism and consistency - every engagement was well-documented, and their findings were always reproducible and clearly explained. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

Honestly, there's not much to dislike. If I had to mention something, maybe their schedule can get busy during high-demand periods - which just shows how many companies trust them. But they always communicate clearly and deliver as promised. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

If you're looking for a capable local partner for penetration testing or red teaming, CyStack is one of the best choices in Vietnam. They combine strong technical skills, ethical hacking experience, and a practical understanding of how software is built and secured. Great team to work with. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

Our company provides security assessment and red teaming services for large clients. We needed a trusted partner with deep offensive security expertise to support our projects during peak workload. CyStack became that partner - their team of ethical hackers consistently delivered high-quality findings and supported us in scaling our service delivery. Their understanding of both software development and security products makes collaboration smooth and efficient. Review collected by and hosted on G2.com.

Response from CyStack Customer Success of CyStack Security Services

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Thank you so much for your thoughtful review and for trusting CyStack as your security partner!

We truly appreciate your kind words about our team’s expertise and professionalism. Our goal has always been to approach every engagement with an attacker’s mindset while maintaining clear communication and actionable results.

We’re glad to know our collaboration has helped support your projects during peak workloads and we look forward to continuing to grow together and strengthen your security operations even further.

(謝易致) T.

Enterprise (> 1000 emp.)

10/22/2025

"A trustworthy professional security partner"

5/5

What do you like best about CyStack Security Services?

Whether it's regular vulnerability scanning reports or immediate support during urgent security incidents, the CyStack team handles issues in a systematic, clear, and professional manner.

Their security testing results not only identify risks but also provide actionable remediation suggestions, making the entire improvement process highly efficient. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

CyStack's technology and reporting quality are both excellent, but the format and visual presentation of its reports can sometimes be a bit technically oriented.

For non-technical departments (such as management or clients), the presentation could be further optimized to make it easier to understand and make decisions.

In addition, we would like to see some communication processes (such as progress tracking and status updates) become more automated and timely. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

If your company prioritizes the security of its websites, apps, or internal systems, CyStack is a highly desirable long-term partner.

We recommend collaborating with them early in the partnership to clarify security goals and priorities, allowing for more targeted testing, monitoring, and improvement plans.

They can not only help identify issues but also assist you in establishing a comprehensive security governance process, transitioning from reactive defense to proactive security management. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

Prevent data breaches and business interruptions.

Protect critical enterprise data and services through early detection and prevention.

Reduce security personnel and management costs.

CyStack's professional team handles detection, monitoring, and emergency response, allowing enterprises to focus on their core business.

Enhance customer trust and brand reputation.

Third-party security protection and compliance certifications strengthen customer and partner trust.

Gain continuous security improvement capabilities.

CyStack provides security reporting and trend analysis, allowing enterprises to continuously optimize their security strategies. Review collected by and hosted on G2.com.

Response from CyStack Customer Success of CyStack Security Services

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Thank you for sharing your detailed feedback. We’re happy to hear that our testing results and support have been valuable to your team. Your suggestions on improving report visualization and communication automation are greatly appreciated. We’re already exploring ways to make these experiences smoother for both technical and non-technical audiences.

Hoat D.

Mid-Market (51-1000 emp.)

10/21/2025

"Comprehensive Security Without Compromising Growth"

5/5

What do you like best about CyStack Security Services?

CyStack helped us build a full security program without slowing down our product growth. Their team combines continuous monitoring, manual pentests, and a bug bounty program, which gave us visibility on risks across our apps, cloud, and backend. Critical issues like SQL injection or data leaks were detected and fixed within 1–2 days instead of weeks. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

Nothing so far. The services are reliable, and the support team is responsive whenever we need help. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

CyStack is a strong choice if you need both proactive and ongoing security. Their team acts as an extension of your own, helping you stay protected without building a large internal security team. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

Working with CyStack has been smooth and effective. They cover monitoring, pentesting, bug bounty, and SOC in one service, so we have a clear view of our security posture at all times. Critical vulnerabilities are detected and fixed quickly, and their team is always available to support us. This allows us to focus on product growth while knowing our infrastructure and users are protected. Review collected by and hosted on G2.com.

Response from CyStack Customer Success of CyStack Security Services

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Thank you so much for the thoughtful review and for trusting CyStack to be part of your growth journey. We’re thrilled to hear that our approach helps your team stay focused on building.

We’re here whenever you need us. If there’s anything we can do to make your experience even better, please reach out to your Customer Success contact or email us at support@cystack.net.

Thank you once again!

Verified User in Computer & Network Security

Small-Business (50 or fewer emp.)

11/12/2025

"Accommodating Partner for Penetration Testing Needs"

5/5

What do you like best about CyStack Security Services?

We engaged CyStack Security Services to support our team with penetration testing projects, especially during periods of high demand when our internal capacity was stretched. As a cybersecurity-focused organization, maintaining both quality and speed in testing is critical to our operations.

CyStack’s team proved to be an excellent extension of our capabilities. Their technical depth and strong understanding of complex security vulnerabilities helped us identify critical issues quickly and efficiently. Their clear communication, timely response, and professional project management made collaboration smooth and dependable.

One of the most valuable aspects of working with CyStack is their flexibility and accommodating nature. They adapted well to our internal workflows and changing priorities without compromising quality or delivery timelines. The actionable reports and practical remediation guidance they provided enabled our teams to fix issues faster and more effectively.

Overall, CyStack has been a reliable and trusted partner in helping us scale our security testing operations. Their combination of technical expertise, professionalism, and cooperative attitude makes this partnership both productive and sustainable. We look forward to continuing this collaboration in future projects. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

Nothing at this time. They were satisfactory in the services delivered to us Review collected by and hosted on G2.com.

Response from Sơn Võ Thành of CyStack Security Services

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Thank you for such a detailed and positive review. We know that for a cybersecurity-focused organization, bringing in an external partner requires a high level of trust. We are honored that you view CyStack not just as a vendor, but as a true extension of your internal capabilities.

It is fantastic to hear that our team’s flexibility and technical depth helped you navigate those periods of high demand. We deliberately design our Penetration Testing processes to be adaptable, fitting into your workflows rather than forcing you to adapt to ours, so it is very rewarding to know this approach kept your operations smooth and your delivery timelines on track.

We look forward to continuing this collaboration and helping you scale your security operations whenever you need us.

Verified User in Information Technology and Services

Small-Business (50 or fewer emp.)

11/11/2025

"Exceptional Expertise and Proactive Support from CyStack"

5/5

What do you like best about CyStack Security Services?

The best part of working with CyStack is their deep technical expertise and responsiveness. Their reports are always detailed, practical, and easy to understand, even for non-security teams. I also appreciate how proactive they are in providing updates, follow-ups, and sharing best practices that go beyond the original engagement scope. Their combination of technical depth and customer care really stands out. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

There’s honestly little to dislike. If anything, I’d say their detailed reports can be quite comprehensive, which sometimes takes extra time to digest — but that’s a good problem to have when you want thorough coverage. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

If you’re looking for a reliable, knowledgeable, and client-focused security partner, I highly recommend CyStack. They deliver both technical excellence and professional service. Whether you need penetration testing, compliance support, or ongoing security monitoring, CyStack can help you build a stronger and safer foundation for your business. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

CyStack has been instrumental in strengthening our organization’s overall security posture. Their penetration testing and continuous vulnerability management services helped us uncover issues that traditional scanning tools often miss. They’ve also provided us with valuable remediation guidance and security training, which greatly improved our internal awareness and incident response readiness. Review collected by and hosted on G2.com.

Response from Sơn Võ Thành of CyStack Security Services

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Thank you for the amazing review! We are especially proud to hear that our reports are bridging the gap for your non-security teams. Making complex findings "practical and easy to understand" is central to our mission. Security works best when everyone in the organization can act on it, not just the experts.

We also appreciate your note on the depth of our reports. We definitely aim for thoroughness to ensure that—as you noted—we catch the issues that automated tools often miss. We are glad you view that comprehensive coverage as a "good problem" to have!

It is great to know that our combination of Penetration Testing, Vulnerability Management, and Security Training is improving your internal awareness and incident response readiness. We look forward to keeping your foundation strong and secure.

Verified User in Accounting

Small-Business (50 or fewer emp.)

11/11/2025

"Exceptional Penetration Testing with Actionable Insights"

5/5

What do you like best about CyStack Security Services?

We are extremely satisfied with the penetration testing services provided by your team. The thoroughness of the assessment and the clarity of the final report were exemplary. Your findings provided us with actionable insights that significantly strengthened our security posture. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

I have no complaints. Everything has been good for me. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

We highly recommend CyStack's penetration testing services. Their team demonstrated deep technical expertise and a thorough understanding of modern attack vectors. The report was not only comprehensive but also provided clear, actionable remediation steps. If you're looking for a partner to truly challenge and strengthen your security posture, CyStack is an excellent choice.

Key focus: Technical skill, comprehensive results, and practical advice. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

CyStack Security Services was instrumental in solving the critical business problem of identifying and mitigating hidden security vulnerabilities within our core digital infrastructure. Specifically, their professional Penetration Testing (Pentest) services provided a deep, real-world assessment of our applications, revealing exploitable weaknesses that manual internal checks had missed. The key benefit has been a significant boost to our overall security posture and regulatory compliance. This assurance directly translates to protecting sensitive customer data, preventing potentially catastrophic data breaches, and maintaining the trust essential for our business operations. Review collected by and hosted on G2.com.

Response from Sơn Võ Thành of CyStack Security Services

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Thank you for your high praise! We are incredibly pleased to hear that our Penetration Testing services delivered exactly what we aim for. Our goal is always to truly challenge your defenses system with modern attack vectors, so knowing that this depth of testing translated into a significant boost for your security posture and regulatory compliance is a huge win for us.

Protecting sensitive customer data is indeed the foundation of business trust, and we are proud to be the partner ensuring that foundation remains solid. We look forward to continuing this collaboration whenever you need us.

Verified User in Outsourcing/Offshoring

Small-Business (50 or fewer emp.)

11/8/2025

"Professional, Reliable, and Insightful Security Partner"

5/5

What do you like best about CyStack Security Services?

What I appreciate most about CyStack Security Services is their professionalism and clarity throughout the entire engagement. Their team communicates complex technical findings in a way that’s easy to understand and directly tied to business impact.

They’re also very responsive — whenever we had questions or needed clarification, they provided quick and detailed answers. The reports are well-structured, prioritizing risks effectively, which made it easier for our development team to take immediate action. Overall, the collaboration felt more like working with a partner than just a service provider. Review collected by and hosted on G2.com.

What do you dislike about CyStack Security Services?

There isn’t much to dislike. That said, they were always transparent about timelines and kept us updated throughout the process. Review collected by and hosted on G2.com.

Recommendations to others considering CyStack Security Services:

I’d recommend CyStack Security Services to any organization that takes security seriously but may not have a full in-house security team. Their approach is thorough, practical, and tailored to each client’s environment — not just a one-size-fits-all checklist.

If you’re looking for a partner who can both identify vulnerabilities and help you understand how to fix them effectively, CyStack is a solid choice. Just make sure to plan the project timeline in advance, especially if you’re engaging them during a busy season, to get the most efficient turnaround. Review collected by and hosted on G2.com.

What problems is CyStack Security Services solving and how is that benefiting you?

CyStack helps us identify and address security vulnerabilities across our systems before they can be exploited. Their vulnerability assessment and penetration testing services gave us clear, actionable insights rather than just technical reports.

As a result, we’ve significantly improved our security posture, reduced potential attack surfaces, and built more confidence in our internal team’s ability to manage threats. It also helped us demonstrate compliance and reassure our partners about our security practices. Review collected by and hosted on G2.com.

Response from Sơn Võ Thành of CyStack Security Services

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Greeting from CyStack.

Reading that you felt like you were working with a partner rather than a service vendor really made our day. That is exactly the kind of relationship we strive to build with our clients.

We know how overwhelming security data can get, so we are glad to hear that our focus on clarity helped your developers cut through the noise. Our goal is always to make sure you don't just see a list of technical problems, but actually understand the business impact as well so you can make the decision more easily.

Thank you for trusting us to help you demonstrate compliance and build confidence with your own partners. We are here to support your team whenever you need us next.