I did some research today. In you're using Internet Explorer 7, there are several enhanced and tighten security features that have been incorporated into IE7. One of them been restricted Clipboard data access by websites and web pages. In Internet Explorer 7, both IE 7 installed on Windows XP or IE7 that comes together with Windows Vista, the behaviour occurs when you visit a website or webpage that tries to access the information stored in Clipboard's memory, as Clipboard's memory stored data can be sensitive and private. For security purpose, IE7 will pop-up a warning alert message as below:
If you allow this, the webpage can access the Clipboard and read information that you've cut or copied recently.
You will then need to press or click Don't Allow or Allow button to get pass the popup message.
This security feature can be disabled. To disable the pop up warning message about possible harmful or unauthorized Clipboard access, follow the steps below:
Go to Tools -> Internet Options.
Go to Security tab.
Select Internet zone, then click on Custom level
button.
Scroll down to Scripting section (at the bottom few).
Under Allow Programmatic clipboard access option, check or select (tick) Enable. Default action for this option is a Prompt, which cause the pop-up message whenever there is any attempt to access the Clipboard.
Click Ok twice to exit from Internet Options.
Changing the preference to Enable for Allow Programmatic clipboard access option can increase security risk. You can set it to Disable to disallow all website's access to Clipboard's resident data. However, the better and more secure alternative is to edit the Allow Programmatic clipboard access setting for Trusted sites zone (steps same as above, only that you select Trusted sites in step 3 instead of Internet), and add the websites that you trusted and selected into Trusted sites zone.
Hope that helps!
