This Post SP1a Hotfix List is here just for convenience/retrieval/context. There are 100. Also from the NY Times Tech Section (Free on web) an article from the New York Times:

A Safer System for Home PC's Feels Like Jail to Some Critics and from Woody's Office Watch on Microsoft's Trustworthy Computing:

Woody's Office Watch 25 June 2003 " Trustworthy Computing Initiatives"

Added SMBP:
Passport Patches Second Large Hole