Microsoft has Microsoft has released a temporary fix for a security flaw in most versions of Internet Explorer that hackers have been using to break into computers.

The one click fix has been posted on Microsoft s support blog. A full, official patch for the problem is expected on Friday.

The Prevent Memory Corruption via ExecCommand in Internet Explorer Fix it solution that is described in this section is not intended to be a replacement for any security update. We recommend that you always install the latest security updates. However, we offer this Fix it solution as a workaround option for some scenarios, the blog reads.

In a warning published late Monday, the German government agency overseeing IT safety called on people using Windows XP or Windows 7 operating systems and Internet Explorer versions 7, 8 or 9 to switch to alternative browsers until Microsoft updates the browser's security features.

The browser's weak point is already being used for targeted attacks, the Federal Office for Information Security warned, adding that the code behind the attack is freely available online and might therefore spread rapidly.

The browser is used by hundreds of millions of consumers and workers around the world.

Attackers lure users to an infected website, for example through an emailed link. Visiting the website then allows hackers to introduce codes to take control of the user's computer, the BSI agency said.

It s always a good reminder to never click on links from sources you don t know or trust.

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