Microsoft officially ended support to Windows XP on April 8, meaning that Windows XP users will no longer receive security updates from the company. Chinese security vendor Qihoo 360 has been developing its own free “XP Shield” software for Chinese PC users. In China, the operating system is still quite popular, and has a 70 percent share of the local market. The company plans to continue offering Windows XP security updates, even as Microsoft has been encouraging consumers buy Windows 7 and Windows 8. Hackers will be able to analyze the updates to find weaknesses in the no-longer supported Windows XP OS.”]