GreyNoise Pros and Cons: Top 5 Advantages and Disadvantages

Quick AI Summary Based on G2 Reviews

Generated from real user reviews

Users appreciate the ease of use of GreyNoise, enabling effective IP management and automated threat responses. (63 mentions)

Users value the automation capabilities of GreyNoise, which enhance threat detection and reduce alert fatigue effectively. (54 mentions)

Users value the detailed context on exploit attempts from GreyNoise, enhancing threat identification and network protection. (44 mentions)

Users value the continuous threat detection of GreyNoise, streamlining monitoring and improving security responsiveness significantly. (43 mentions)

Users value the real-time alerts from GreyNoise, enhancing security by efficiently blocking threats and minimizing false positives. (40 mentions)

Users often find the slow loading times frustrating, particularly when executing multiple complex searches at once. (15 mentions)

Users experience dashboard issues such as limited enrichment data and performance problems when monitoring multiple subsidiaries. (8 mentions)

Users find integration issues with GreyNoise can complicate its use alongside various security tools. (8 mentions)

Users experience navigation issues that lead to unnecessary complexity and longer search times for log investigations. (8 mentions)

Users find the inefficient alert system cumbersome, requiring excessive configuration and causing alert noise in large networks. (7 mentions)

5 Pros or Advantages of GreyNoise

1. Ease of Use

Users appreciate the ease of use of GreyNoise, enabling effective IP management and automated threat responses.

See 63 mentions

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Verified User

Mid-Market (51-1000 emp.)

4.5/5

"GreyNoise Makes Unusual Traffic Easy to Understand and Act On"

What do you like about GreyNoise?

Because we host open access scientific data, we naturally see a lot of unusual, automated traffic every day. It helps us very much in understanding wh

Leon H.

Mid-Market (51-1000 emp.)

5.0/5

"Effective IP Behavior and Links Performance Monitoring For a Clear Network Flow Visualization"

What do you like about GreyNoise?

GreyNoise has been a very good tool for understanding our network traffic. It helps spot unusual IP activity and attempted portal logins which made ou

2. Automation

Users value the automation capabilities of GreyNoise, which enhance threat detection and reduce alert fatigue effectively.

See 54 mentions

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Gitimene N.

Mid-Market (51-1000 emp.)

4.5/5

"Powerful And Excellent Threat Detection Software."

What do you like about GreyNoise?

I like GreyNoise because it is very user-friendly, and I like the way it automatically scans our systems and send alerts whenever a new vulnerabilitie

Lincoln C.

Mid-Market (51-1000 emp.)

5.0/5

"GreyNoise is the finest in the aspect of detecting endpoint threats and firewall config automation"

What do you like about GreyNoise?

GreyNoise is very user-friendly and provides comprehensive information on vulnerabilities within our environment. The way it automatically scans our s

3. Detailed Analysis

Users value the detailed context on exploit attempts from GreyNoise, enhancing threat identification and network protection.

See 44 mentions

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Maite M.

Mid-Market (51-1000 emp.)

4.5/5

"GreyNoise: Delivers Strong IP Visibility with Clear Timelines and Tags."

What do you like about GreyNoise?

For the past 3 years we have been using GreyNoise to monitor our systems and what I like most about it is how it gives us strong visibility into what

Mwaje R.

Mid-Market (51-1000 emp.)

4.5/5

"Topnotch Platform For Threat Detection And Blocking."

What do you like about GreyNoise?

GreyNoise has really been useful when It comes to identifying unexpected IP activity. I like how it captures every IP address details including risk s

4. Threat Detection

Users value the continuous threat detection of GreyNoise, streamlining monitoring and improving security responsiveness significantly.

See 43 mentions

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Thuranira N.

Mid-Market (51-1000 emp.)

4.5/5

"Amazing And Advanced Threat Detection System."

What do you like about GreyNoise?

GreyNoise is a solid tool that provides helpful context that helps us to determine the behavior is common or there is something more being targeted. I

Hunter L.

Small-Business (50 or fewer emp.)

5.0/5

"Great at finding vulnerabilities leading to the most accurate patch cycles"

What do you like about GreyNoise?

It has really good ISP scanning and CVE reporting giving us accurate threat results without false positives and the easy to navigate dashboard helps v

5. Alerts

Users value the real-time alerts from GreyNoise, enhancing security by efficiently blocking threats and minimizing false positives.

See 40 mentions

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Verified User

Mid-Market (51-1000 emp.)

4.5/5

"GreyNoise Makes Unusual Traffic Easy to Understand and Act On"

What do you like about GreyNoise?

Because we host open access scientific data, we naturally see a lot of unusual, automated traffic every day. It helps us very much in understanding wh

Leon H.

Mid-Market (51-1000 emp.)

5.0/5

"Effective IP Behavior and Links Performance Monitoring For a Clear Network Flow Visualization"

What do you like about GreyNoise?

GreyNoise has been a very good tool for understanding our network traffic. It helps spot unusual IP activity and attempted portal logins which made ou

5 Cons or Disadvantages of GreyNoise

1. Slow Loading

Users often find the slow loading times frustrating, particularly when executing multiple complex searches at once.

See 15 mentions

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Maite M.

Mid-Market (51-1000 emp.)

4.5/5

"GreyNoise: Delivers Strong IP Visibility with Clear Timelines and Tags."

What do you dislike about GreyNoise?

It can take some time to work through multiple IP lookups in a row.

Barosio R.

Mid-Market (51-1000 emp.)

5.0/5

"Flexible internet firewall offering a solid protection layer against network attack"

What do you dislike about GreyNoise?

A con would be that the management console is not the quickest one I’ve seen.

2. Dashboard Issues

Users experience dashboard issues such as limited enrichment data and performance problems when monitoring multiple subsidiaries.

See 8 mentions

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Verified User

Small-Business (50 or fewer emp.)

4.5/5

"Helps Me See What Really Matters in Our Alerts"

What do you dislike about GreyNoise?

I sometimes want to see enrichment data go deeper and perhaps by displaying some context around new actors or linking out to threat reports from right

Verified User

Mid-Market (51-1000 emp.)

4.0/5

"GreyNoise Turns Raw Internet Noise into Laser‑Focused Security Insights"

What do you dislike about GreyNoise?

Once you start monitoring multiple subsidiaries, the dashboard struggles—tenant‑level roll‑ups are tucked away and CSV export becomes the only realist

3. Integration Issues

Users find integration issues with GreyNoise can complicate its use alongside various security tools.

See 8 mentions

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Verified User

Small-Business (50 or fewer emp.)

5.0/5

"GreyNoise is my security tool for internet noise canceling"

What do you dislike about GreyNoise?

It’s easy to use, but making it perfectly work in conjunction with all the different security tools we use took slightly more effort than I anticipate

Josh A.

Small-Business (50 or fewer emp.)

4.5/5

"Quick decision with GreyNoise"

What do you dislike about GreyNoise?

Integrating GreyNoise with older security tools required custom scripting.

4. Navigation Issues

Users experience navigation issues that lead to unnecessary complexity and longer search times for log investigations.

See 8 mentions

See Related User Reviews

Verified User

Mid-Market (51-1000 emp.)

4.5/5

"GreyNoise Makes Unusual Traffic Easy to Understand and Act On"

What do you dislike about GreyNoise?

It’s a great tool for non profits who are in need of security tool about traffics but the interface could be made better. Some commonly used features

Vaibhav S.

Mid-Market (51-1000 emp.)

4.0/5

"Instantly identifies threats and reduces false positives"

What do you dislike about GreyNoise?

Some IPs do not have enough information, so I sometimes have to double check things myself. I also feel like certain parts of the interface could be a

5. Inefficient Alert System

Users find the inefficient alert system cumbersome, requiring excessive configuration and causing alert noise in large networks.

See 7 mentions

See Related User Reviews

Hunter L.

Small-Business (50 or fewer emp.)

5.0/5

"Great at finding vulnerabilities leading to the most accurate patch cycles"

What do you dislike about GreyNoise?

They could give us the option to add more than one email when choosing where threat alerts should be sent.

Maarten D.

Small-Business (50 or fewer emp.)

5.0/5

"GreyNoise delivers reliable risk visibility and clear threat insights to keep patch status updated"

What do you dislike about GreyNoise?

The tagging, while a great feature does require some tweaking in some cases to get the proper IP status change alerts setup.

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Philippe D.

SOC Analyst

Small-Business (50 or fewer emp.)

1/23/2026

"Clear visualization of network traffic flow to sufficiently detect anomalies and botnet activity"

5/5

What do you like best about GreyNoise?

Setting up GreyNoise vulnerability scanning was very easy, the user interface is intuitive, and the real-time scanning provides me with valuable CVEs insights. Any network exploitation attempts identified are clearly defined and accompanied by steps on how to remediate them. Getting live updates of all new threats makes it easy to keep up with emerging security threats and effectively block any observed botnet activity. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I haven’t noticed any shortcomings yet, the tool is very well suited for our environment and I stay assured that vulnerabilities are in check. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

Effectively helps to understand the behavior irregularities in our network and further predict security events. It shows us which IP addresses are scanning the internet, helps spot unusual activity and identify performance of links to remediate threats early before our devices access malicious links. Review collected by and hosted on G2.com.

Eric F.

Network Engineer

Mid-Market (51-1000 emp.)

1/27/2026

"Excellent tool to easily find the vulnerable host within our network and best for firewall tuning"

5/5

What do you like best about GreyNoise?

I like its ability to effectively assess network connections and IP behavior change to proactively identify vulnerabilities exploited by attackers. It protects us against malware and login attempts, even if it is not known, due to its behavior-based mode of operation. Compared to other tools it took us less time to set up IP scans and the process is much easier. The system is great and gives us great insights into threats targeting our endpoints. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

Nothing major to note as a dislike we have found the service and solution great and never had any issue. Review collected by and hosted on G2.com.

Jonathan L.

Cybersecurity Analyst

Mid-Market (51-1000 emp.)

2/3/2026

"Powerful Real-Time IP Risk Analysis with Rich CVE Visibility Greatly Enhancing Threat Mitigation"

5/5

What do you like best about GreyNoise?

Very powerful tool that helps with great amount of IP addresses analysis and visibility allowing us to generate various reports and accurate IP classification depending on the risk score. The dashboard has an abundant amount of CVEs information available making it easy for us to investigate all network threats. It responds in real-time to known and unknown threats before they become business disrupting events. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I have nothing negative to say about the team I have worked with and the tool provides the best vulnerability scanning features. Review collected by and hosted on G2.com.

Giovanni P.

Senior Infrastructure Engineer, Network

Mid-Market (51-1000 emp.)

1/21/2026

"The tool effectively manages vulnerabilities with bulk IP analysis for faster remediation of threats"

5/5

What do you like best about GreyNoise?

I value its intelligent risk-based prioritization which allows us to focus first on the vulnerabilities that represent the greatest threat. The real-time updated list of IPs gives us the vulnerabilities that actually matter, not just a bloated list of CVEs. Its continuous monitoring of network connections and immediate visibility into critical endpoint exposure is an added value and effectively supports our remediation efforts. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

There aren’t any features that I dislike, GreyNoise is very comprehensive in every aspect. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

Provides great oversight of our environment and is extremely valuable in reducing the attack surface. It excels at identifying potential security risks across endpoints which has made vulnerability management much simpler for us. The clear vulnerability insights helps focus remediation efforts efficiently on what attackers are targeting at that moment. Review collected by and hosted on G2.com.

Maite M.

Software Engineer

Mid-Market (51-1000 emp.)

2/16/2026

"GreyNoise: Delivers Strong IP Visibility with Clear Timelines and Tags."

4.5/5

What do you like best about GreyNoise?

For the past 3 years we have been using GreyNoise to monitor our systems and what I like most about it is how it gives us strong visibility into what external IPs are doing before they teach deeper into our environment. I like the IP profile view which shows clear timelines and detailed tags which helps us to quickly understand intent. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

It can take some time to work through multiple IP lookups in a row. Review collected by and hosted on G2.com.

Dustin T.

System Administrator

Mid-Market (51-1000 emp.)

2/6/2026

"The very best tool to find vulnerabilities and patch them immediately to prevent network compromise"

5/5

What do you like best about GreyNoise?

Great product that helps ensure we stay up to date against all vulnerabilities by analyzing the intent of network connections in our environment and portal login attempts to prevent WordPress enumeration. It’s got very good centralized cybersecurity management with the most accurate vulnerability detection and reliable remediation workflow management. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

There are no noticeable glitches or inaccuracies present in vulnerability scanning and the tool doesn’t fall short in providing tailored experience. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

The tool helps our company identify the vulnerabilities found in our servers, endpoints and public facing devices. The dashboard has fantastic visuals for a snapshot understanding of compromised IP addresses, domains and ISPs which helps us understand the threat landscape and apply patches immediately so our environment isn’t attacked. Review collected by and hosted on G2.com.

Arvind R.

Site Reliability Engineer

Mid-Market (51-1000 emp.)

1/14/2026

"Very fast vulnerability assessment solution with good additional firewall management features"

5/5

What do you like best about GreyNoise?

From solution selection through to deployment and operation, GreyNoise team has been very supportive and professional. GreyNoise has been the top solution for scanning our network for vulnerabilities and provides a rich information about the possible threats posed by the scanned domains, IP addresses and ISPs. The multiple IP analyses are precise and they are very helpful for maintaining firewalls and other security compliance phases. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I have not experienced any limitations using this solution or encountered features that are unpleasant to use. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

GreyNoise ended up taking vulnerability assessment towards the next stage in our organization by enabling us to detect compromised URLs and block IPs that are risky, offering a seamless cycle of network safety from a single point of monitoring, classifying, and fixing all vulnerabilities across all device connections. Review collected by and hosted on G2.com.

Vishal D.

QA Engineer

Mid-Market (51-1000 emp.)

12/2/2025

"Perfect for reducing false positives and alert fatigue"

4.5/5

What do you like best about GreyNoise?

I use GreyNoise every day to cut down all the noise in my alerts. It quickly tells me if an IP is just a mass scanner or something I actually need to look into. This saves me hours that I used to waste on false positives. It is easy to set up, works smoothly with my existing tools, and the interface is simple to understand. I can cross check suspicious activity in seconds and focus only on real threats. The integrations with our security tools make the response process much faster. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

A few advanced features are not easy to find, and occasionally it does not auto load data from our EDR, so I have to double check things myself. I would love clearer filtering options and maybe some AI features to help spot new threats faster. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

GreyNoise has solved the biggest problem I had like wasting hours chasing alerts that turned out to be nothing. It helps me instantly tell if an IP hitting my systems is just a mass scanner or something I should actually investigate. Before this, I spent too much time dealing with false positives and digging through noise. Now I can cross check suspicious activity in seconds and walk away from anything that is not unique to my environment. It also keeps my SIEM and other tools from overwhelming me with unnecessary alerts. Review collected by and hosted on G2.com.

Yuliya K.

Lead Quality Assurance Engineer

Mid-Market (51-1000 emp.)

12/1/2025

"It is expensive but surprisingly the sandbox does work"

4.5/5

What do you like best about GreyNoise?

I am writing this as the air conditioning in our server room hums extremely loudly and is distracting. To be honest the sandbox did not crash on me when I was doing malware analysis which is good news since most of the tools I have worked with do and I have to restart everything. Also the summary output from the AI assistant is very readable and I no longer have to read through 100 logs which consumes a lot of time. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

The dark theme (dark mode) is always set back to bright white upon logging in and it is very frustrating so they should fix this bug as quickly as possible.The price point of this application is simply too high in comparison to what you receive and it appears that the developers broke the product into a number of different modules so they could charge you for each one individually. In addition it becomes extremely slow and cumbersome if you are trying to perform a series of complex or multi-query searches at once. Review collected by and hosted on G2.com.

What problems is GreyNoise solving and how is that benefiting you?

We use GreyNoise to eliminate most of the background noise and it prevent us from chasing down and investigating every single scanner. We utilize greynoise as it saves us a tremendous amount of time by not having to review all alerts individually and instead the automation process eliminates most of our manual investigation time and allows us to focus on other areas of our job. Review collected by and hosted on G2.com.

Maurice B.

Information Security Engineer

Small-Business (50 or fewer emp.)

2/3/2026

"Complete visibility tool for our network connections and real time URL intent monitoring"

5/5

What do you like best about GreyNoise?

My experience with GreyNoise is excellent. They offer outstanding support, effective responses and have good knowledge in cybersecurity. The tool has been very helpful in monitoring our network environment observing network traffic utilization to report on CVEs. It catches malware, URL anomalies and traffic spikes allowing us to review all network logs and set the appropriate firewalls. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

GreyNoise is the best traffic analyzing tool in the market. It has a lot of power and capabilities and no functions I find disappointing. Review collected by and hosted on G2.com.