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Cybersecurity glossary

What is malware?

Definition

Malware is any software designed to harm, spy on or gain unauthorized control of a device, network or account.

Why it matters

Types include ransomware, information stealers, trojans, spyware, worms and botnet agents. Most malware relies on a user running something or on an unpatched flaw, so updates and careful downloading prevent much of it.

Common questions about malware

Sources