Censys Platform

What it does

The Censys Platform is an internet intelligence and Attack Surface Management (ASM) product that maps an organization's external exposure and adversary infrastructure using first-party scanning of the internet across all 65,535 ports. Its foundation is the Censys Internet Map, a continuously refreshed dataset of hosts, services, and certificates built from Censys's own scan engine and certificate transparency records rather than third-party feeds. Security teams use it to find internet-facing assets that internal scanners miss, including services on nonstandard ports, self-signed hosts, and unmanaged cloud systems.

How it works

The platform starts from seed domains and cloud accounts, then uses continuous seed discovery, its own scan engine, and cloud connectors to attribute internet-facing hosts to the organization, fingerprinting each host's software, services, and certificates. It alerts on new hosts, ports, or certificates and ranks exposures with the Exploit Prediction Scoring System (EPSS), CISA Known Exploited Vulnerabilities (KEV), and a host Reputation Score. From a flagged exposure, analysts enter the Censys ARC curated threat dataset and use CensEye to pivot across reused certificates, command-and-control (C2) servers, and phishing infrastructure, then publish Collections as feeds to security tooling.

Credentials and traction

Censys holds SOC 2 Type II and UK Cyber Essentials certifications and was named among providers in Forrester's External Threat Intelligence Service Providers Landscape, Q1 2025. Organizations representing over 50 percent of the Fortune 500 and 119 government bodies, including 14 national cyber authorities, use the platform, alongside named customers NOS, Swiss Life, Proofpoint, At-Bay, and The Citizen Lab. Its scan datasets also serve threat hunting and academic research teams as a reference source on internet infrastructure.