Web browsers may be configured in a way that the clipboard content is made publicly available. Place some text into your clipboard and check whether you are vulnerable to this potential threat...

Microsoft Internet Explorer addicts, if you didn't pass this test, try this:

1. Select "Tools" from the Explorer menubar, click "Internet Options..."
2. Click the "Security" tab
3. Select the "Internet" zone, then click the "Custom Level..." button
4. In the Scripting section, disable "Allow paste operation via script"

or switch to a decent browser...

Hitting the button below will remotely scan your computer system's IANA^*-assigned TCP ports and indicate which ones are found to be open to the Internet (A good test of your firewall, isn't it?)

Since this test is based on multi-connection requests (one could think of it as a web attack), please ensure that you have carte blanche to go ahead should this system not be yours.

^* IANA: Internet Assigned Numbers Authority

Note: the process may take a minute or two...