There is an exploit where another can view the contents of your clip board if you are using an IE browser, because javascript has the rights to paste clipboard contents. If you’re feeling insecure perhaps you would like to follow some steps to make sure your information is not retreieved by some malicious script.
Test out your Internet Explorer here.
?Ǭ†Access your security settings and chand Allow paste operations via script to disabled

Just as the patch for the Windows Genuine Advantages is out, there is another way to by pass the system. The first way was to change some settings of the browsers javascript, the other way is by changing a setting in a Microsoft validation tool called “GenuineCheck.exe”. With this it is possible to generate a code that will validate the Windows software on a machine as genuine even if it is pirated, according to a Web site publicized on Thursday in a posting to the popular Full Disclosure security mailing list.
So far according the Cnet it has not been verified by microsoft.
Interested in knowing more? Get whole story here at Cnet : Cnet