About
GreyNoise Intelligence is an advanced cybersecurity platform providing real-time, verifiable network threat intelligence to defenders worldwide. It operates the world's largest and most sophisticated deception network, continuously collecting data on internet-wide scanning and exploitation activity to give security teams actionable insights without the noise. The platform serves over 80,000 users — including 400+ global government agencies and 60% of the Fortune 1000 — by helping SOC teams cut through mass internet scanner noise, accelerate incident investigations, and prioritize vulnerabilities based on active exploitation trends in the wild. Key capabilities include CVE Disclosure Early Warning (detecting traffic spikes tied to new vulnerability disclosures), Compromised Asset Detection, Vulnerability Prioritization, SOC Efficiency (filtering false positives), Incident Investigation, and Threat Hunting. For small and mid-sized businesses, GreyNoise Block provides fully configurable, real-time IP blocklists. GreyNoise integrates seamlessly with major security ecosystems including SIEM, SOAR, TIP, and Firewall platforms, with native support for Google SecOps and CrowdStrike Falcon. A free search tier allows individual researchers and analysts to query the GreyNoise dataset without a subscription, making it accessible to teams of all sizes.
Key Features
- CVE Disclosure Early Warning: Detects traffic spikes that indicate a high likelihood of new CVE disclosures, giving defenders an early warning before widespread exploitation begins.
- SOC Noise Reduction: Automatically filters out low-priority alerts generated by mass internet scanners, enabling SOC teams to focus on real, high-severity threats.
- Compromised Asset Detection: Instantly alerts teams when an internal asset communicates with a known malicious IP address, accelerating threat containment.
- Real-Time Blocklists (GreyNoise Block): Provides fully configurable, real-time IP blocklists for SMBs and enterprises to proactively stop attackers at the network edge.
- Deep SIEM/SOAR Integrations: Native integrations with Google SecOps, CrowdStrike Falcon, and major SIEM, SOAR, TIP, and Firewall platforms for seamless workflow enrichment.
Use Cases
- Security Operations Center (SOC) teams filtering out false-positive alerts generated by mass internet scanners to reduce analyst fatigue and focus on critical incidents.
- Vulnerability management teams using real-time exploitation trend data to prioritize patching efforts for actively exploited CVEs over low-risk theoretical vulnerabilities.
- Incident response teams enriching investigation timelines with contextual IP intelligence to quickly determine the scope and origin of a breach.
- Threat hunters proactively identifying anomalous network behavior and enriching campaigns with GreyNoise IP context to uncover stealthy attackers.
- Government agencies and enterprise security teams integrating GreyNoise into their SIEM/SOAR pipelines to automate threat triage and reduce mean time to respond (MTTR).
Pros
- Massive Deception Network: Backed by the world's largest deception network, GreyNoise provides uniquely verifiable and comprehensive internet-wide scanning data.
- Proven Enterprise Scale: Trusted by 80,000+ users, 400+ government agencies, and 60% of the Fortune 1000, demonstrating reliability at the highest levels of security operations.
- Free Search Tier Available: Individual researchers and small teams can query the GreyNoise dataset for free, lowering the barrier to entry for threat intelligence.
- Broad Integration Ecosystem: Integrates natively with Google SecOps, CrowdStrike Falcon, and a wide array of SIEM, SOAR, TIP, and firewall solutions.
Cons
- Enterprise Pricing Complexity: Full-platform access and advanced features are gated behind enterprise pricing, which may be costly for smaller organizations.
- Network-Edge Focus: GreyNoise is purpose-built for external network threat intelligence and may not address internal lateral movement or endpoint-level threats.
- Learning Curve for New Users: Getting the most out of the platform, especially integrations and custom tagging, may require familiarity with threat intelligence workflows.
Frequently Asked Questions
What is GreyNoise and how does it work?
GreyNoise is a threat intelligence platform that operates a global deception network to passively collect data on internet-wide scanning and exploitation activity. It analyzes this data in real time to identify malicious IPs and help security teams distinguish genuine threats from background noise.
Is GreyNoise free to use?
Yes, GreyNoise offers a free search tier that allows anyone to query its dataset for IP intelligence. Paid plans and enterprise licensing unlock additional features such as real-time blocklists, SIEM/SOAR integrations, and advanced analytics.
What integrations does GreyNoise support?
GreyNoise integrates with SIEM, SOAR, TIP, and Firewall platforms. It has native integrations with Google SecOps and CrowdStrike Falcon, and supports popular security orchestration tools for automated enrichment and triage.
What is GreyNoise Block?
GreyNoise Block is a product designed for small and mid-sized businesses that provides fully configurable, real-time IP blocklists to proactively stop malicious actors before they can reach your infrastructure.
How does GreyNoise help with CVE vulnerability management?
GreyNoise monitors internet-wide traffic patterns and alerts teams when spikes indicate active exploitation of a newly disclosed CVE, enabling faster patching prioritization based on real-world exploitation data rather than theoretical risk scores.
