Last summer, Censys began a new chapter: we graduated from the University of Michigan and became a company. This transition will help Censys become an even more powerful tool for securing devices and networks, and it allows us to offer Censys to businesses and enterprises for the first time. Today, we’re introducing Censys Basic, Censys Pro, and Censys Enterprise paid plans, which allow commercial use and include technical support.
We report the results of a large-scale measurement study of the HTTPS certificate ecosystem—the public-key infrastructure that underlies nearly all secure web communications. Using data collected by performing 110 Internet-wide scans over 14 months, we gain detailed and temporally fine-grained visibility into this otherwise opaque area of security-critical infrastructure.