Microsoft rescues XP users with emergency browser fix

Microsoft is helping the estimated hundreds of millions of customers still running Windows XP, which it stopped supporting earlier this month, by providing an emergency update to fix a critical bug in its Internet Explorer browser. Microsoft Corp rushed to create the fix after learning of the bug in the operating system over the weekend when cybersecurity firm FireEye Inc warned that a sophisticated group of hackers had exploited the bug to launch attacks in a campaign dubbed "Operation Clandestine Fox. It was the first high-profile threat to emerge after Microsoft stopped providing support to its 13-year-old XP operating software on April 8.