Users of Microsoft’s Internet Explorer are being urged to switch to a rival until serious security flaws have been fixed. This flaw could allow criminals to take control of people’s computer’s and steal their passwords. Microsoft themselves have warned people to become vigilant while it prepared an emergency patch to resolve it. Internet explorer is used by the vast majority of the world’s computer users. What makes it worse for Microsoft is that other rivals such as Firefox, Opera, Chrome and Safari have not been suspected of the flaw. It’s been advised that users change IE security setting to high, switch to a windows user account with limited rights and ensure you keep anti-virus and anti-spy ware software is up to date.