Cyber security dictionary

The cyber security terms and acronyms that come up when you run a business, defined in plain English and sourced.

A

A prolonged, hidden intrusion by a well-resourced attacker seeking long-term access.

Every point where an attacker could try to get in or get data out.

The specific route or method an attacker uses to reach a target.

How a company keeps essential functions running through a serious disruption.

Email fraud that impersonates a trusted party to redirect payments or data.

Requiring two or more independent proofs of identity to sign in.

A fake message that tricks someone into giving up credentials or money.

Give every account only the access it needs, and no more.

Malware that encrypts systems and demands payment to restore access.

The team and tooling that monitor for threats and run the response.

Trust nothing by default and verify every request to every resource.

A software flaw unknown to the vendor, with no patch yet available.

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