Apple today released Security Update 2009-002 for Mac OS X 10.4 Tiger users which is recommended for all users and improves the security of Mac OS X. Previous security updates have been incorporated into this security update.

Security Update 2009-002 is available via Software Update and also via standalone installers.

More info and download links:
•  Security Update 2009-002 (Tiger Intel, 165MB)
Security Update 2009-002 (Tiger PPC, 75MB)