Ctrl+C may be the most important work we do everyday. But it's not a very
safe thing to do. Read on to know why. What happens when you press Ctrl+C
while you are Online… We do copy various data by Ctrl + C for pasting
elsewhere.

This copied data is stored in clipboard and is accessible from the net by a
combination of Javascripts and ASP.

Just try this:

1) Copy any text by Ctrl + C
2) Click the Link: http://www.sourcecodesworld.com/special/clipboard.asp

3) You will see the text you copied was accessed by this web page.

Do not keep sensitive data (like passwords, credit card numbers, PIN etc.)
in the clipboard while surfing the web. It is extremely easy to extract the
text stored in the clipboard to steal your sensitive information.

Interestingly, this hack works only on internet explorer, and not on
Mozilla Firefox browser.