From CBS news:
(AP) Microsoft Corp. is once again on the defensive against hackers after the posting of a new program that gives average PC users tools to unlock copy-protected digital music and movies.
The latest version of the FairUse4M program, which can crack Microsoft's digital rights management system for Windows Media audio and video files, was published online late Friday. In the past year, Microsoft plugged holes exploited by two earlier versions of the program and filed a federal lawsuit against its anonymous authors. Microsoft dropped the lawsuit after failing to identify them.