Special emphasis on security from window xp service pack 2

window xp service pack 2 was released on August 6, 2004 after several delays, with a special emphasis on security. Unlike the previous service packs, window xp service pack 2 adds new functionality to Windows XP, including an enhanced firewall, improved Wi-Fi support, such as WPA encryption compatibility, with a wizard utility, a pop-up ad blocker for Internet Explorer, and Bluetooth support. Security enhancements include a major revision to the included firewall which was renamed to Windows Firewall and is enabled by default, advanced memory protection that takes advantage of the NX bit that is incorporated into newer processors to stop some forms of buffer overflow attacks, and removal of raw socket support (which supposedly limits the damage done by zombie machines). Additionally, security-related improvements were made to e-mail and web browsing. Windows XP Service Pack 2 includes the Windows Security Center, which provides a general overview of security on the system, including the state of anti-virus software, Windows Update, and the new Windows Firewall. Third-party anti-virus and firewall applications can interface with the new Security Center.

On August 10, 2007, Microsoft announced a minor update to window xp service pack 2, called Service Pack 2c (SP2c).The update fixes the issue of the lowering number of available product keys for Windows XP. This update will be only available to system builders from their distributors in Windows XP Professional and Windows XP Professional N operating systems. SP2c was released in September 2007.