I am glad to announce about “Introduction to JAAS” new course available for free at www.abelski.com. The JavaTM Authentication and Authorization Service (JAAS) is used to authenticate the user (reliably and securely determine who is currently using the code) and to authorize him (ensure the user has the required permission). This course overviews the authorization and the authentication possibilities this API provides.

Lessons Learned from Running a Startup: The Bootstrap Way
If you consider running a startup the bootstrap way then you might get some insight from the lessons I learned.