Unsolicited bulk e-mail messages.

A specialized type of spam that attempts to trick you into entering one’s confidential personal information for identity theft or fraud.

A forgery of an e-mail header so that the message seems to be sent from someone or somewhere other than the original source.

Malicious software designed to automatically copy itself from one computer to another, which can consume high bandwidth on the local drive or on the network.

Malicious software that sends important personal information of the user and the actions taken by the user on the computer to the malicious persons without the knowledge of the user.