GreyNoise Platform

What it does

The GreyNoise Platform is a Cyberthreat Intelligence (CTI) product that classifies internet-wide scanning and exploitation traffic at the network edge, separating targeted attacks from opportunistic background noise so security teams can suppress low-priority alerts and concentrate on active threats. Its distinguishing mechanism is the Global Observation Grid, a network of passive sensors that impersonate vulnerable software to draw out attackers and capture every packet, producing verifiable, first-party intelligence on the IP addresses scanning and attacking the internet.

How it works

The platform operates through three linked functions: Query, Observe, and Automate. Query provides real-time investigation of any IP or CVE against GreyNoise's internet-wide view, with GNQL search, behavioral tags tied to CVEs across 90-day activity timelines, and packet-level forensics in Session Explorer. Observe runs the passive sensor grid that records attacker behavior, including JA4 fingerprints and raw payloads. Automate converts any saved query into dynamic, vulnerability-specific blocklists and pushes intelligence to firewalls, SIEM, and SOAR tools through more than 80 integrations and a bulk IP lookup API.

Credentials and traction

The GreyNoise Platform holds SOC 2 Type II and ISO 27001 certifications and was named an Honorable Mention in the inaugural 2026 Gartner Magic Quadrant for Cyberthreat Intelligence Technologies. It serves enterprise security operations centers and government agencies, and its published customer roster spans Fortune 500 organizations across financial services, healthcare, technology, and manufacturing, including firms such as Toyota, T-Mobile, and Goldman Sachs.