If you haven’t updated to Safari 5.0.1 yet for Safari Extensions, maybe you should to address a recent security vulnerability? MacRumors reports that the latest update addresses a critical flaw that could allow malicious sites to gather Address Book information. According to Apple,
Safari’s AutoFill feature can automatically fill out web forms using designated information in your Mac OS X Address Book, Outlook, or Windows Address Book. By design, user action is required for AutoFill to operate within a web form. An implementation issue exists that allows a maliciously crafted website to trigger AutoFill without user interaction.
For more information regarding the security content of Safari, be sure to check out Apple’s official document here: http://support.apple.com/kb/HT4276
[via MacRumors]