Microsoft fixes 19-year-old bug with 'emergency' patch

Microsoft has patched a critical bug in its software that had existed for 19 years. IBM researchers discovered the flaw, which affects Windows and Office products, in May this year - but worked with Microsoft to fix the problem before going public. The bug had been present in every version of Windows since 95, IBM said. Attackers could exploit the bug to remotely control a PC, and so users are being urged to download updates.

Steven Sinofsky

Steven Sinofsky, the head of Microsoft's Windows division, has left the company with immediate effect.

His departure comes just weeks after Microsoft launched Windows 8, the latest edition of its flagship product, seen as key to the firm's future.
Microsoft did not offer any reason for Mr Sinofsky's departure.

The company said Julie Larson-Green would be promoted to lead all Windows software and hardware engineering.
"This is shocking news. This is very surprising," said Brendan Barnicle, an analyst at Pacific Crest Securities.
He added that many observers saw Mr Sinofsky as a potential successor to Steve Ballmer, Microsoft's chief executive.