This week, Microsoft released an import security update named MS12-006 for their operating systems Windows XP, Vista, W7, 2003, 2008, 2008 R2): If addresses, known issues with the SSL 3.0 and TLS 1.0 protocols (critical protocols for Web security) can allow attackers to decode intercepted communications.
This update fixes the issue. Note that the vulnerability is in the protocols themselves, and Operating System’s other than Windows are affected too. You may want to install the patch quickly, due to the relative ease of intercepting traffic on wireless networks.
There are a number of known issues with the patch, and you may find that some sites no longer work once you have installed it.
This protocol is typically used by online shops and websites that are specially secured.
For more information, visit http://support.microsoft.com/kb/2643584