The Trusted Computing Platform Alliance (TCPA) is one of the most high-profile operations for the development and adoption of an industry standard for personal computer security. The main participants in the TCPA are Compaq, HP, IBM, Intel, and Microsoft. This Web site has many documents written for or about the alliance. The most significant resource is the latest version of the main specification for trusted computing, which was released in May 2002. Another report lists some usage models and describes some important characteristics of good security implementations. There are also frequently asked questions about trusted computing in general and the TCPA itself, as well as white papers and presentations.