Microsoft again put the scare into Windows XP users, telling them that after April 8, 2014, the chance that malware will infect their PCs could jump by two-thirds. The claim, made by Tim Rains, director of Microsoft’s Trustworthy Computing group, came on the heels of the release of the company’s twice-annual Security Intelligence Report. Following up on comments he made in August, Rains again warned Windows XP stragglers to expect an increase in attacks when the aged operating system exits support in five months. “After end of support, attackers will have an advantage over defenders who continue to run Windows XP,” Rains asserted in a Tuesday post to a company blog. “After April next year, when we release monthly security updates for supported versions of Windows, attackers will try and reverse engineer them to identify any vulnerabilities that also exist in Windows XP.