Hi,
I was undergoing a security related training and the instructor mentioned an attack using an browser vulnerability/exploit called 'Clickjacking'
Man ... It was some really scary stuff that he demonstrated.
The malicious script simply takes hold of ur machines clipboard and never releases it. The only way out after clicking on a link or a simple mouse over (yes - it takes only that much to get infected!) is to reboot ur PC.
People ... Look up 'Clickjacking' on google. Better armed with knowledge than sorry!
Debian Kernel