Drive-by freak out...OR,
Unplug that computah right now!
It is already possible for an assassin to send someone an e-mail with an innocent-looking attachment connected to it. When the receiver downloads the attachment, the electrical current and molecular structure of the central procecessing unit is altered, causing it to blast apart like a large hand grenade.(Link)
Dang! Just think what'll happen to all those tubes if you're sending an internet while this happens.