A program or technique that takes advantage of a vulnerability to remotely access or attack a program, computer or server.

A trojan, or trojan horse, is a seemingly legitimate program which secretly performs other, usually malicious, functions. It is usually user-initiated and does not replicate.

A trojan, or trojan horse, is a seemingly legitimate program which secretly performs other, usually malicious, functions. It is usually user-initiated and does not replicate.

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.

A legitimate application that may introduce additional security risks or be used for malicious purposes.

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.

A program or set of programs which hides itself by subverting or evading the computer’s security mechanisms, then allows remote users to secretly control the computer’s operating system.

A program or technique that takes advantage of a vulnerability to remotely access or attack a program, computer or server.

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.