Adobe has updated Adobe Acrobat and Adobe Reader to version 9.3.3. The patch is available from the Help menu, under ‘Check for Updates’, and it’s an important security patch, correcting security holes currently being exploited by malware.

The patch alone is NOT adequate. ALSO, go to Edit, Preferences, and UNCHECK these two items:
In JavaScript, the top item ‘Enable Acrobat JavaScript’ should be unchecked.
In Trust Manager, the top item, ‘Allow opening of non-PDF file attachments with external applications’ should be unchecked.

The list of the most-commonly installed web file viewers and their current patch levels and links to version tests and installers has been updated, it’s here: //www.startupware.com/patches