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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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JL
Jonathan L.
02/03/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

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

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.
MB
Maurice B.
02/03/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

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

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

Excellent Tool With Advanced Threat Detection Capabilities.

What I like most about GreyNoise is how it helps me understand the kind of activities happening against our systems. I love how it checks for network vulnerabilities and helps to track remediation more effectively and more clearly. GreyNoise is the market leader in cyber security management.

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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