Microsoft promises Vista security
A senior Microsoft executive has promised that its new operating system will be more secure than ever.
Jean-Philippe Courtois, president of Microsoft International, said that beefing-up security was one reason behind delays to Windows Vista.
Microsoft has been criticised for flaws in previous systems that left users vulnerable to attacks by hackers.
Mr Courtois said Microsoft had done "tons of work to make Vista a fantastic experience when it comes to security".
The firm had originally aimed to launch Vista - the first major update since Windows XP was introduced five years ago - in the second half of 2006.
