Sharing your logon credentials (username and password) with anyone. Downloading copyrighted material including music, movie, and other electronic files available through peer-to-peer file sharing services such as LimeWire, FrostWire, Napster, BitTorrent, etc. Changing or altering hardware/software configurations without permission of lab supervisor. Game playing or other trivial applications. Excessive printing. Sending annoying or obscene messages to any other user. Displaying material or information that is harassing, defamatory, obscene or offensive. Using computer systems for personal activities that are not required for class or research. Importing software of unknown function and quality. This is the primary cause of virus transmission.