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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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DT
Dustin T.
02/06/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

The very best tool to find vulnerabilities and patch them immediately to prevent network compromise

Great product that helps ensure we stay up to date against all vulnerabilities by analyzing the intent of network connections in our environment and portal login attempts to prevent WordPress enumeration. It’s got very good centralized cybersecurity management with the most accurate vulnerability detection and reliable remediation workflow management.
HL
Hunter L.
02/04/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Great at finding vulnerabilities leading to the most accurate patch cycles

It has really good ISP scanning and CVE reporting giving us accurate threat results without false positives and the easy to navigate dashboard helps view their risk scoring in one place. Their service has been outstanding and the tool gives instant status of all endpoints in our environment and provides really reliable threat management recommendations on all the risks identified.
BM
Bhaveen M.
02/04/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Extremely fast IP scans to surface malicious mass scanning targeting our network

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.

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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