Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
A computer virus is a type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code. Its effects can range from harmless pranks to severe damage to systems and data.
A cyberattack that uses disguised email as a weapon with the aim of tricking the email recipient into believing that the message is something they want or need - a request from their bank, for instance - and then clicking a link or downloading an attachment