From the image in this article,
Snow Leopard was also ignored in December, when Apple patched Safari 6 and 7 for newer editions of OS X, butdid not update Safari 5.1.10, the most-current Apple browser for the OS.
Apple delivered the final security update for Snow Leopard in September 2013.
Although Mac users don't garner nearly as many users as Windows does, 1 in 5 Mac users being left in the dust by Apple is nothing to sneeze at as noted in the Mac Virus blog by David Harley Senior Research Fellow at ESET working with the Cyber Threat Analysis Center since 2011:
Snow Leopard waves goodbye to support? - Mac Virus blog
- Windows XP: released 2001, support ending in April 2014.
- Snow Leopard: released 2009…
Small Blue-Green World
He can also be found @DavidHarleyBlog on Twitter.