Virus – Malicious program designed to damage data; usually spread via infected e-mail attachments
Trojan – Malicious software disguised as harmless program
Firewall – Software to protect computers against hackers
Keylogging – Software/hardware to track keystrokes on a computer to gather passwords, credit card numbers
Pharming – When fraudsters redirect net users from legitimate to fake sites
Phishing – Fraudulent e-mails and pop-ups to fool you into revealing personal information for criminal gain
Rogue dialler – Software that installs itself on computers and changes settings to dial a premium rate number instead of usual dial-up account
Spam – Unsolicited e-mails, often offering products or services in which you have no interest
Spyware – Small programs that secretly monitor sites visited, potentially violating privacy and slowing computers