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GreyNoise

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131 reviews
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Average star rating
4.8
Serving customers since
2017
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GreyNoise

131 reviews

GreyNoise is a cybersecurity platform that collects, analyzes, and classifies internet-wide scan and attack traffic to help security teams distinguish between benign and malicious activities. By leveraging a global network of passive sensors, GreyNoise identifies IP addresses involved in mass scanning and categorizes them based on intent, enabling organizations to reduce false positives and focus on genuine threats. This approach enhances the efficiency of Security Operations Centers (SOCs by filtering out irrelevant alerts and providing actionable intelligence on emerging threats. Key Features and Functionality: - Real-Time Threat Intelligence: Provides up-to-date information on internet scanning activities, allowing security teams to respond swiftly to potential threats. - IP Classification: Categorizes IP addresses as benign, suspicious, or malicious based on their behavior, aiding in accurate threat assessment. - Vulnerability Prioritization: Offers insights into active in-the-wild exploitation of vulnerabilities, assisting teams in prioritizing patching and remediation efforts. - Integrations: Seamlessly integrates with existing security tools and platforms, enhancing the overall security infrastructure. - Advanced Analytics: Utilizes data science techniques and AI to process vast amounts of data, providing meaningful insights and reducing alert fatigue. Primary Value and Problem Solved: GreyNoise addresses the challenge of alert fatigue faced by security teams due to the overwhelming volume of false positives generated by security tools. By filtering out internet background noise and focusing on relevant threats, GreyNoise enables organizations to: - Enhance Efficiency: Reduce the time spent investigating non-threatening alerts, allowing teams to concentrate on critical issues. - Improve Threat Detection: Identify and respond to emerging threats more effectively with real-time, actionable intelligence. - Optimize Resource Allocation: Prioritize vulnerability remediation efforts based on active exploitation data, ensuring resources are directed where they are needed most. By providing a clear distinction between benign and malicious internet activities, GreyNoise empowers security teams to act with speed and confidence, ultimately strengthening an organization's cybersecurity posture.

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GreyNoise Reviews

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Tabitha C.
02/11/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Helpful Context for Suspicious IPs, Faster Investigation Decisions

GreyNoise has been a useful tool when validating suspicious external activity during investigations. When we see unfamiliar IPs interacting with our perimeter, it provides helpful context that allows us to determine whether the behavior is common internet scanning or something more targeted. This reduces guesswork and supports faster response decisions.
RK
Rhea K.
02/11/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

GreyNoise Quickly Clarifies Suspicious IP Traffic and Reduces Debugging Noise

GreyNoise helps me make sense of unexpected IP traffic that shows up in our application monitoring. When something suspicious appears in logs, I can quickly understand whether it’s routine internet behavior or something that deserves attention. It has helped reduce distractions during debugging and production support.
KM
Kathageri M.
02/11/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Greatest Of All Time In The Aspect Of Detecting Endpoint Threats.

What I like most about GreyNoise is how it reduces guesswork when deciding the next step to take. It is the best vulnerability management system since it is very fast to scan the network and update the dashboard with any new threats identified. GreyNoise has a very nice centralized cyber security management with accurate vulnerability detection.

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HQ Location:
Washington, D.C.

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@GreyNoiseIO

What is GreyNoise?

GreyNoise empowers the security teams of enterprises and global governments to act with speed and confidence by providing real-time, verifiable perimeter-based threat intelligence. This allows security teams to reduce noise in security operations, perform in-depth threat hunting campaigns, and focus on the most critical threats to their network. Our patented sensor technology enables us to collect and analyze unique threat data at-scale that no one else can. We provide the most actionable threat intelligence against mass internet scanning and exploitation, so that no attack works twice. For more information, please visit www.greynoise.io.

Details

Year Founded
2017