GreyNoise
Real-time intelligence for modern threats
Founded
2017
Starting Price
Free
Category
Cybersecurity
Last updated March 8, 2026
About GreyNoise
GreyNoise is a cybersecurity intelligence platform that helps security teams reduce alert fatigue by classifying internet-wide scanning and exploitation activity. It operates the world's largest deception network with 5,000+ sensors across 80 countries, processing half a billion sessions daily to provide real-time, verifiable threat intelligence.
Pros & Cons
Pros
- Dramatically reduces SOC alert fatigue by filtering out benign internet noise
- Massive sensor network (5,000+ sensors in 80 countries) provides highly accurate intelligence
- Seamless integration with major SIEM and SOAR platforms like CrowdStrike Falcon
- Free community tier makes it accessible for individual researchers and small teams
- Real-time CVE exploit tracking helps prioritize vulnerability remediation
Key Features
Global Observation Grid
Network of 5,000+ sensors across 80 countries monitoring global attack traffic in real time
IP Classification
Automatically classifies IPs as benign, malicious, or unknown to reduce alert noise
IP Timeline
Provides up to 90 days of history for IPs observed scanning and exploiting the internet
SIEM & SOAR Integration
Integrates with CrowdStrike Falcon, Splunk, and other security platforms for automated alert triage
CVE Exploit Tracking
Tracks which vulnerabilities are being actively exploited in the wild with trends visualization
GreyNoise Block
Downloadable real-time blocklists that can be directly ingested by most firewalls
Alert Suppression
Automatically suppresses alerts from benign scanners, saving 20-40% analyst time
Pricing
Community
Free
- Basic IP lookups
- Community API access
- Limited daily queries
- IP classification data
Block
Custom
Best For
SOC Alert Triage
Automatically suppress alerts generated by benign scanners and known harmless IPs, freeing analysts to focus on genuine threats
Incident Investigation
Add context to security incidents by understanding whether IPs are part of mass scanning campaigns or targeted attacks
Threat Hunting
Proactively hunt for threats by analyzing scanning patterns, CVE exploitation trends, and attacker infrastructure
Vulnerability Prioritization
Identify which CVEs are being actively exploited in the wild to prioritize patching and remediation efforts
