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(In that formula, n is Mountain Lion, and n-2 is Snow Leopard.) But the back-to-back releases of Lion and Mountain Lion in 20, and the resolve of Snow Leopard users to stick with that version, has altered Apple's policy.Īccording to Web measurement vendor Net Applications, Snow Leopard powered 28% of all Macs last month, too large a group for Apple to abandon without some blowback. Traditionally, Apple has dropped support of "n-2" - where "n" is the current edition of OS X - around the launch of n. More recently, however, Apple discontinued Safari updates for OS X Leopard in July 2011, one month after it shipped the final set of security patches for that OS. While Safari 5.1.8 came eight months after the introduction of Mountain Lion, the record remains safe with Safari 4, which was updated 13 months after the expiration of support for OS X 10.4, aka Tiger. Unlike the non-browser patches delivered to Snow Leopard by Security Update 2013-001, the Safari fixes were not a record for Apple. The browser launched in June 2010, but was replaced on new editions of OS X with Safari 6, which debuted last July alongside Mountain Lion. It's probable that some of the same vulnerabilities - especially the 15 in WebKit, the open-source browser engine that powers Safari as well as Google's Chrome - were addressed in Safari 5 at the same time.īefore last week, Apple's last Safari 5 update was released in May 2012.

Apple did detail the patches it applied to boost Safari to version 6.0.3 last week.