Security Contact List
This is an attempt at aggregating all known organization security contact methods. The list contains 2,090 organizations, the largest such list to date. Data comes from a variety of sources, including disclose.io's program list, HackerOne's public directory, .gov domain security contacts, Hack your Government, and Hack your University.
Searchable list: https://cybertransparency.org/disclose
If you are interested in contributing or spot an error, submit a pull request.