What is Censys?

Censys is a search engine that allows computer security researchers to discover, monitor, and analyze devices and networks connected to the Internet. It works by regularly scanning the entire public IPv4 address space, collecting data on the services and configurations of devices connected to the internet, and then making this data searchable. Censys is commonly used for identifying vulnerable systems, understanding internet-wide trends, performing security audits, and tracking the deployment of various technologies across the internet.