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GreyNoise

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129 reviews
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Average star rating
4.8
Serving customers since
2017
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GreyNoise

129 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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DK
Derek K.
03/02/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

GreyNoise Delivers Accurate Threat Alerts and Very Efficient Malicious IP Monitoring

GreyNoise makes it easy to monitor malicious URLs and gives recent activity insight which helps manage network threats effectively. It’s great in providing accurate vulnerability alerts and monitoring of all network connections and analyzing multiple IP addresses makes it easy to find botnets and block critical attack paths.
Verified User in Research
UR
Verified User in Research
02/26/2026
Validated Reviewer
Review source: Seller invite
Incentivized Review

GreyNoise Makes Unusual Traffic Easy to Understand and Act On

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 what is safe traffic and what something we should look into. GreyNoise gives us very simple informing on what we should do and provides status when something looks suspicious.
LH
Leon H.
02/22/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

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

GreyNoise has been a very good tool for understanding our network traffic. It helps spot unusual IP activity and attempted portal logins which made our network monitoring much easier. The platform has great capability to create several traffic reports and alerts which allows us to view details about specific traffic subset and manage related CVEs in an effective manner.

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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