On Monday, Microsoft announced that there have been attacks on a previously unknown hole in some versions of Internet Explorer 9 and earlier. The company said that customers who were worried about being attacked could try temporary workarounds (http://technet.microsoft.com/en-us/security/advisory/2757760#section7) to protect themselves. Each of the temporary workarounds will effect usability and may make IE unusable.
Until Microsoft releases a patch the best way to protect yourself is to use another browser, such as Chrome or Firefox.
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