Here are the most recent interesting security related articles I can recommend you read.

Trojan Hides Itself as Firefox Extension
Security firm McAfee warned of a new trojan that installs itself as a Firefox extension on Tuesday, saying it had found Web sites linking to a virus known as FormSpy. Once loaded on the infected computer, the trojan begins sending personal information entered in the Web browser to a malicious site. 

IE7 to be Pushed to Users Via Windows Update
IE7 will be pushed to users via Windows Update. This has serious implications for e-commerce websites whose functionality might be affected by any bugs in the software. Also to have end users suddenly using a new browser right before the holiday shopping season could magnify the cost any bugs that might create a bad user experience on sites.