Can a browser get the data on my clipboard? Data could be for example my temporary password?
Any browser or operating system that allows this?
Note that other client side technologies such as Java applet, Adobe Flash, Silverlight may also have access to your data in the clipboard.
In Tools -> Internet Options -> Security -> -> Custom Level, you can find the following setting:
Sadly, I wasn't able to find an equivalent setting in neither FF nor in GChrome.