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G2 recognized GreyNoise
GreyNoise

By GreyNoise

4.8 out of 5 stars
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GreyNoise Reviews & Product Details

Value at a Glance

Averages based on real user reviews.

Time to Implement

1 month

GreyNoise Media

GreyNoise Demo - Data Collection
GreyNoise maintains a global fleet of thousands of sensors mimicking commonly used and exploited software. These sensors capture all traffic that interacts with them.
GreyNoise Demo - Data Analysis
This data is sent to the GreyNoise analytics engine in real-time, which classifies the intent of the activity and tags the data for easy querying and analysis.
GreyNoise Demo - Dissemination
The processed intelligence can be consumed through our API, our Visualizer portal, bulk data files, or directly by your security platforms via our integrations.
GreyNoise Demo - Solutions for SOC Teams
Solutions for SOC Teams - GreyNoise makes it easy to distinguish between benign and malicious traffic so you can focus on the real threats.
GreyNoise Demo - Solutions for Vulnerability Management Teams
Solutions for Vulnerability Management Teams - GreyNoise monitors internet scan activity in real-time to provide you with the best signal on the likelihood of exploitation of the vulnerabilities you care about.
GreyNoise Demo - Solutions for Threat Hunting Teams
Solutions for Threat Hunting Teams - Use GreyNoise to accelerate your threat hunting. We tag everything we see, you can query against any tag. This means looking for any anomaly or correlation is just a few queries away.
Security teams are slammed - how can you tell what's a real threat and what's just... noise? Check out our new explainer video to understand how GreyNoise analyzes internet noise, and helps SOC teams reduce alerts.
Play GreyNoise Video
Security teams are slammed - how can you tell what's a real threat and what's just... noise? Check out our new explainer video to understand how GreyNoise analyzes internet noise, and helps SOC teams reduce alerts.
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GreyNoise Reviews (131)

Reviews

GreyNoise Reviews (131)

4.8
131 reviews

Review Summary

Generated using AI from real user reviews
Users consistently praise GreyNoise for its accurate threat detection and real-time visibility into network vulnerabilities, which significantly reduces false positives and alert fatigue. The tool's ability to filter out irrelevant internet noise allows teams to focus on genuine threats, enhancing overall security efficiency. However, some users note that the interface can be overwhelming for newcomers.

Pros & Cons

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CW
Cybersecurity Engineer
Mid-Market (51-1000 emp.)
"GreyNoise Makes Unusual Activity Triage Clear and Actionable"
What do you like best about GreyNoise?

GreyNoise is especially useful when reviewing unusual activity against our public facing services. I often use it to understand whether repeated connection attempts are part of widespread internet behavior or something more focused on our environment. The platform gives enough background on IP behavior to support decisions around rate limiting, firewall tuning, and alert suppression. It fits well into our investigation flow without adding extra complexity. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

Some of the deeper insights require a bit of clicking to reach, especially when comparing multiple IPs during an investigation. I’d prefer faster ways to pivot between related activity or group similar behavior patterns in one view. Review collected by and hosted on G2.com.

ZB
Senior SOC Analyst
Mid-Market (51-1000 emp.)
"Robust IP and Web Host scanning to ensure we apply reliable firewall policies across the environment"
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.

BM
Cybersecurity Engineer
Mid-Market (51-1000 emp.)
"GreyNoise Makes External Threat Validation Fast and Clear"
What do you like best about GreyNoise?

GreyNoise helps me understand what kind of activity is happening against our internet-facing systems without relying on assumptions. When I investigate alerts related to suspicious IPs, I can quickly see patterns such as coordinated scanning behavior or repeated probing across different services. This context helps me decide when to harden controls, update firewall rules, or leave something alone because it poses no real risk. It has become a regular part of how I validate external threats. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

The platform is very data rich, which can feel overwhelming during fast moving incidents. I sometimes have to step away from the UI and export results to simplify analysis or share findings internally. A more streamlined incident focused view would be helpful in high pressure situations. Review collected by and hosted on G2.com.

AP
Cyber Security Specialist
Mid-Market (51-1000 emp.)
"Quick detection of compromised URLs and exploitable vulnerabilities across all endpoints"
What do you like best about GreyNoise?

I was very impressed by the GreyNoise team as they helped us explore their product, they were very informative and a pleasure to work with. One aspect, among many, that I like most about GreyNoise is how it actively checks for network vulnerabilities and helps to track remediation more clearly than any other tool. It can easily check every URL connection path and provides us with a list of any threats detected in them so we are able to quickly identify endpoints that do not have critical security patches installed and further prevent endpoint exploits. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I have not found any limitations with this tool as it takes no time to understand each of its features and get full visibility of all vulnerabilities. Review collected by and hosted on G2.com.

MD
Sr. Information Security Engineer
Small-Business (50 or fewer emp.)
"GreyNoise delivers reliable risk visibility and clear threat insights to keep patch status updated"
What do you like best about GreyNoise?

It is easy to search by risk to see the most malicious IPs and hosting providers with unusual traffic which provides great vulnerability visibility and gives a clear understanding of what is being scanned allowing us to block unauthorized network access better than any other threat management platform we’ve utilized. Having a strong GreyNoise security team that is directly involved with prioritizing threats is a wonderful addition to this solution compared to other vulnerability management tools. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

NP
Senior Manager, Infrastructure and Security
Small-Business (50 or fewer emp.)
"A great platform for instant threat blocking and automated patching across all our operating systems"
What do you like best about GreyNoise?

It is a reliable solution that was easy to implement and manage in our environment and any follow-up questions we had were promptly answered. It has a unified dashboard which is great for CVE visibility that captures every IP address detail including risk scores, originating country and network they are targeting. The tool is very much fast to scan the network and update the dashboard with any new threats identified. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I have not experienced any issues using GreyNoise and it effectively provides fantastic vulnerability management for our organization. Review collected by and hosted on G2.com.

MH
Sr. Cybersecurity Analyst
Mid-Market (51-1000 emp.)
"Easy to implement, vulnerability scanning is excellent and malicious IP blocking is super accurate"
What do you like best about GreyNoise?

GreyNoise has been a very valuable tool for us because of how effectively it helps us set up a network scanner to ensure all connections to our devices are being scanned for vulnerabilities. The insights offered are incredibly detailed covering all possible aspects of an attack or potential compromise. I like that the dashboard provides all relevant details of scanned IPs, the type of risks associated with them and labeling all the attack vectors that need to be patched. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

I do not see any drawback as their support team is one of the best we’ve dealt with and the tool is very solid at managing vulnerabilities. Review collected by and hosted on G2.com.

BM
Cloud Security Engineer
Small-Business (50 or fewer emp.)
"Extremely fast IP scans to surface malicious mass scanning targeting our network"
What do you like best about GreyNoise?

The platform delivers reliable, efficient and comprehensive vulnerability management capabilities with great IP scanning accuracy that shows IP addresses that are opportunistically scanning the internet and are a threat to our organization enabling us to apply the right patches to our devices to completely prevent connections to such IPs. The GreyNoise team is always there to assist with remediation, questions about IP scans, and advice about configurations all done in a helpful and professional manner. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

It is seamless as I expected navigating across the dashboard is easy and nothing to dislike concerning its vulnerability scanning. Review collected by and hosted on G2.com.

OP
Cybersecurity Engineer
Mid-Market (51-1000 emp.)
"GreyNoise Speeds Up Security Decisions with Rich IP Behavior Context"
What do you like best about GreyNoise?

GreyNoise has been very helpful for validating unusual IP activity hitting our exposed systems. I use it when investigating inbound traffic spikes or unexpected connection attempts, and it provides enough behavioral context to decide whether the activity is routine or worth immediate action. It supports faster security decisions and helps avoid overreacting to harmless internet behavior. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

While the information is strong, the platform could make it easier to compare multiple IPs side by side during an active investigation. A more streamlined workflow for bulk analysis would improve efficiency for engineering teams. Review collected by and hosted on G2.com.

MS
Sr. Information Security Manager
Mid-Market (51-1000 emp.)
"Concise and thorough during threat assessment with a swift blocking of detected malware"
What do you like best about GreyNoise?

What stands out the most about GreyNoise is the details provided with each exploit attempt by IPs scanning the internet, the GreyNoise team that was very helpful in setting it up in our environment, and the availability of patch management options. The dashboard clearly displays which endpoints the attackers are targeting and we can also add tags and assign different criticality values to multiple IP addresses allowing good planning of resolution and patching. Review collected by and hosted on G2.com.

What do you dislike about GreyNoise?

Implementing scan in a large network requires lots of configuration to balance load and network and also to reduce alert noise. Review collected by and hosted on G2.com.

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Pricing Insights

Averages based on real user reviews.

Time to Implement

1 month

Return on Investment

6 months

Perceived Cost

$$$$$
GreyNoise Features
Asset Management
Security Workflow Automation
Deployment
Proactive Alerts
Malware Detection
Intelligence Reports
Endpoint Intelligence
Security Validation
Dynamic/Code Analysis
AI Text Summarization
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