GreyNoise Reviews (129)

Reviews

GreyNoise Reviews (129)

4.8
129 reviews

What do users say?

Generated using AI from real user reviews
Users consistently praise GreyNoise for its clear IP behavior insights and ability to reduce alert fatigue, making it easier to identify whether suspicious activity is routine or requires immediate action. The platform's contextual intelligence helps streamline investigations, allowing teams to focus on real threats without getting bogged down by noise. However, some users note that the interface can feel crowded, especially during high-volume investigations.

Pros & Cons

Generated from real user reviews
View All Pros and Cons
Search reviews
Filter Reviews
Clear Results
G2 reviews are authentic and verified.
RN
Rahul N.
DevOps Engineer
Mid-Market (51-1000 emp.)
"Strong IP intelligence with easy integrations into existing tools"
5/5
What do you like best about GreyNoise?

GreyNoise gives us a clear way to make sense of noisy or confusing network traffic without having to jump between multiple security tools. It helps quickly identify suspicious IPs, shows where they originate from, and what type of scanning or attack behavior they are involved in. The dashboard is easy to use and updates in near real time, which makes it simpler to figure out what needs immediate attention and what can be safely ignored. It also makes it easier to spot unusual activity and potential gaps like missing patches. Since it doesn’t require any agent installation, the setup was straightforward and saved a lot of manual effort for the team. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

GreyNoise helps us identify risky IPs and understand what is happening in our network traffic, but the intelligence can sometimes feel a bit limited since it does not always clearly explain the real impact or suggest specific next steps, which means we still need to do some manual validation before taking action. On the positive side, the onboarding process is smooth and easy to follow, and the support team is responsive and helpful whenever we need clarification or assistance. Review collected by and hosted on G2.com.

HJ
Hardik J.
DevOps Engineer
Mid-Market (51-1000 emp.)
"Faster threat detection with smooth integrations"
4.5/5
What do you like best about GreyNoise?

GreyNoise has really helped us understand what is actually going on in our network instead of getting confused by too many alerts. It clearly shows which threats are real and how an attacker might try to enter, so we know where to take action. The dashboard is simple and gives useful details like risky IPs, their location, and what they are targeting, which makes monitoring easier. It also adds proper context to logs and alerts, helping us quickly decide what to ignore and what to block. We were able to spot missing patches and unusual activity much faster. Setup was quick since there was no agent needed, and it has saved a lot of manual effort for the team. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

One concern I have is that even though GreyNoise provides clear data about threats, it does not always go deeper in suggesting the next steps, so the team still has to spend time figuring out what action to take. It would be more helpful if the intelligence side was a bit more proactive. Also, when it comes to cost, it does deliver value, but for smaller teams the pricing can feel a bit on the higher side compared to how much work still needs to be done manually. With stronger built-in insights and automation, it would feel more worth the investment. Review collected by and hosted on G2.com.

GS
Gaurav S.
Manager DevOps
Mid-Market (51-1000 emp.)
"Makes security monitoring more focused and efficient"
4.5/5
What do you like best about GreyNoise?

I regularly check firewall logs, web server activity, and login attempts, and GreyNoise makes this process much easier by adding clear context to what’s actually happening. Instead of showing a long list of possible issues, it highlights real threats and attack paths, helping me understand which IPs risky and what kind of activity are is targeting our systems. The dashboard is simple, updates quickly, and shows useful details like risk scores, origin countries, and targeted networks, so I can act faster without deep investigation. It also helps identify missing patches and unusual traffic patterns, which improves our overall security posture. Since it works without any agent, setup was smooth and it saves a lot of manual effort, especially for smaller teams managing multiple alerts daily. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

One thing I feel is missing is deeper smart insights, as it mostly shows what is happening but does not always suggest what action to take next. It would be better if it had stronger AI to guide decisions automatically. Also, integrations with tools like SIEM or other security systems could be smoother, since connecting everything sometimes takes extra effort. Better automation and tighter integrations would save more time for teams. Review collected by and hosted on G2.com.

KS
Kamlesh S.
DevOps Engineer
Mid-Market (51-1000 emp.)
"Best tool to understand global and local security risks"
4.5/5
What do you like best about GreyNoise?

GreyNoise makes things easier by showing real threats instead of just a long list of possible issues. It helps me clearly see which IPs are risky, what kind of activity is happening, and where attacks could come from. The dashboard is simple and updates quickly, so I can track suspicious behavior without much effort. I also like that it adds proper context to alerts, so I know what needs action and what can be ignored. Setup was smooth since it works without any agent, and it saved a lot of time compared to manual checking. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

One thing that could be better is the integrations. While GreyNoise gives very useful data on its own, connecting it smoothly with other tools like SIEMs or existing security systems is not always as simple as expected. Sometimes it takes extra effort to align the data flow or make it work properly with current workflows. If integrations were more seamless and plug and play, it would save time and make it even more effective in daily operations. Review collected by and hosted on G2.com.

NK
Nandani K.
SRE
Mid-Market (51-1000 emp.)
"Valuable platform for managing high volumes of security alerts"
4.5/5
What do you like best about GreyNoise?

GreyNoise has been very helpful in understanding what kind of activity is happening against our internet facing systems. It allows us to quickly search IP addresses by risk level and identify the most suspicious traffic or unusual hosting providers. This gives us a clearer picture of what is actually being scanned in our network and helps us block unauthorized access more confidently. I also like how it adds context to firewall logs, web server events, and other alerts so we can quickly see whether an IP is part of normal internet scanning or something more serious. It helps us identify endpoints that may be missing important security patches and reduce potential vulnerabilities. The platform also makes it easier to create firewall rules because malicious IPs and hosts are clearly classified. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

The tagging feature is helpful, but sometimes it needs a bit of fine-tuning to make sure IP status alerts are triggered correctly. Also, because the platform shows a lot of detailed data, it can feel a bit heavy to navigate during urgent investigations. In those situations, I sometimes export the results to review or share them more easily. A simpler incident focused view would make it easier to focus on the most important details quickly. Review collected by and hosted on G2.com.

AY
Arun Y.
System Engineer
Mid-Market (51-1000 emp.)
"Makes threat investigation faster by adding context to suspicious IP activity"
4.5/5
What do you like best about GreyNoise?

GreyNoise has been a very reliable tool and it was quite easy for us to set up and start using in our environment. The dashboard is very helpful because it clearly shows information about suspicious IP addresses, their risk scores, the country they come from, and which networks they are targeting. It also scans the network very quickly and updates the dashboard whenever new threats appear, which helps us stay aware of possible risks. I like that it is easy to search by risk level to identify the most malicious IPs and unusual traffic patterns. This helps us understand what kind of scanning or probing activity is happening against our internet facing systems. It also helps us find endpoints that may be missing security patches so we can fix them before they become a problem. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

The platform provides a lot of detailed data, which is useful, but during fast-moving incidents it can sometimes feel a bit overwhelming to review everything quickly. When investigating a potential threat, I occasionally export the results so it’s easier to analyze and share with the team. A more simplified, incident focused view inside the platform would make it easier to identify the most important details during high pressure situations. Review collected by and hosted on G2.com.

Madhavan A.
MA
Madhavan A.
CEO
Mid-Market (51-1000 emp.)
"GreyNoise Clearly Maps Real Attack Paths with Strong Agentless Scanning"
4/5
What do you like best about GreyNoise?

The most important thing here is that it presents actual attackable paths as opposed to a listing of “potential” vulnerabilities that may or may not represent an issue and with GreyNoise, you receive factual evidence including captured credentials and the entire attack chain illustrated clearly so you can view how an attacker would penetrate your environment and where to stop them. It operates without installing a client (agent) and I have zero complaints regarding the agentless operation of GreyNoise; in particular, I think this is excellent for smaller teams who formerly had to manually spend upwards of a week to accomplish the same tasks that GreyNoise provides in under a week. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

The only complaint I have is that you can only perform one scan at a time. That’s it – that’s my gripe and it’s a big one – If another application is currently scanning your network, then you’re simply waiting for that other application to finish scanning and waiting can become tedious very quickly when you’re checking multiple environments. Review collected by and hosted on G2.com.

RS
Ruth S.
Senior Threat intelligence Analyst
Mid-Market (51-1000 emp.)
"GreyNoise RIOT Classification Cuts Alert Noise and Speeds SIEM Triage"
4.5/5
What do you like best about GreyNoise?

We process high volume of inbound connection attempts and in payments infrastructure we get hit by opportunistic scanners constantly. Before GreyNoise every unfamiliar IP was getting escalated and analysts spent hours tracking crawlers. RIOT and noise classification let us filter those out of the alert queue immediately. Quick Check api integration into our SIEM took maybe one day to set up. The context it provides is also useful for not just that an IP is noisy but what it is scanning for. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

During compliance review last quarter we needed historical data on specific IPs going back further than standard subscription covers. That hit a wall fast. Regulators sometimes ask for retrospective threat context and the retention window did not cover it. Review collected by and hosted on G2.com.

ZB
Zaheer B.
Senior SOC Analyst
Mid-Market (51-1000 emp.)
"Robust IP and Web Host scanning to ensure we apply reliable firewall policies across the environment"
5/5
What do you like best about GreyNoise?

It is truly a great vulnerability management platform that allows us to scan IP addresses and web hosting services to get full visibility into all the traffic flowing within our network enabling us to have complete control over sites our users can access which is a very good way to decrease attack surface. It does a great job of classifying malicious IPs and web hosts so creating firewall policies for our environment is extremely straightforward. GreyNoise has been a fantastic vendor and partner to our overall cyber security program. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

Probably they could offer a wider choice of APIs to extract the IP information into our other tools and custom dashboards. Review collected by and hosted on G2.com.

ID
Ignacio D.
Chief Information Security Officer
Mid-Market (51-1000 emp.)
"GreyNoise: Concrete Vulnerability Intelligence to Prevent Risks Before Threats Materialize"
5/5
What do you like best about GreyNoise?

GreyNoise has been a complete vulnerability management tool invaluable in strengthening security across our environment by offering strong analysis of network traffic pattern and complete exposure monitoring. It is great at assessing and prioritizing risks across all our attack surfaces long before any attack attempts. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

Nothing that I dislike it performs seamlessly and response and stability of the tool is quite good. Review collected by and hosted on G2.com.