Censys allows users to discover the devices, networks, and infrastructure on the Internet and monitor how it changes over time.

Started at the University of Michigan and backed by Google Ventures, Greylock Partners, and Decibel, Censys helps you protect your organization by discovering unknown assets and associated risks through its Censys Attack Surface Management [ASM] Platform. Censys mines its market-leading Internet datasets and comprehensive certificate database as well as integrates with common cloud providers to uncover the hidden links between assets, surface unknown assets and risks, and provide a comprehensive Internet inventory. Censys also provides data and services to threat analysis teams.