Only recently Apple made the news in which it was uncovered that Snow Leopard shipped with an older Adobe Flash 10 Player plug-in containing known security issues. As browser security depends on plug-ins as well, Mozilla is jumping the gun to address this issue.

Starting with Firefox 3.5.3 (and 3.0.14), a supposed to be security and maintenance release, Mozilla will verify if you're running the latest Adobe Flash Player plug-in. Although this check is currently only done for Adobe Flash Player plug-in, it will be improved to support other important plug-ins as well. This service should be a prime example for the other browser vendors, as we're dealing with a universal security problem (although Chrome may use the sand box principal by default with plug-ins in the future).

A staggering 80% of the web surfers out there does not have the latest Adobe Flash Player plug-in installed, and subsequently may be browsing insecurely even while running the latest Chrome, Firefox, Internet Explorer, Opera or Safari release.