The issue focused on Microsoft's Internet Explorer browser and Windows Vista Internet Explorer software. Google Chrome was added as an optional browser at some point after Microsoft pulled IE from Windows Vista machines. It wasn't available until Windows 8.

Microsoft updated Internet Explorer 9 with security patches for nine vulnerabilities that hackers exploited in attacks during May and June of 2012. Microsoft patched five vulnerabilities before Microsoft launched its Patch Tuesday patch Wednesday to fix Windows XP computers that still ran older versions of Internet Explorer. Microsoft announced earlier this week that Internet Explorer