Censys is an Internet intelligence platform that maps Internet infrastructure at scale through continuous, comprehensive scanning. The company conducts daily ZMap scans across the entire IPv4 address space and synchronizes with public certificate transparency logs to maintain real-time visibility of connected devices and infrastructure. This data powers device discovery, attack surface monitoring, threat hunting, and exposure management capabilities.
The platform serves over half of the Fortune 500, government agencies, and customers across more than fourteen countries. Censys originated from academic research at the University of Michigan in 2015, establishing its foundation in rigorous Internet-scale data collection and analysis. The company positions itself as a primary source for authoritative intelligence on Internet infrastructure, enabling security teams to identify exposures and manage risk at Internet scale.
Organisations use Censys to transition from reactive to proactive security approaches by discovering unknown or unmonitored assets, monitoring changes in their attack surface, and conducting threat investigations. The platform's continuous scanning model provides defenders with current intelligence on infrastructure vulnerabilities and exposures across critical infrastructure, enterprises, and government sectors.