Business Email Compromise and mailbox takeover

Attack scenario

Business Email Compromise and mailbox takeover

An adversary takes over or impersonates a trusted email identity and abuses communications for fraud, payment diversion, data collection, or further phishing.

Why this scenario matters

BEC often does not require malware. The adversary uses a stolen session or account, mailbox rules, communication history, and social engineering to make messages appear trustworthy.

Effective protection must connect email, identity, session, MFA, domain, and anomalous-user-behavior controls.

The scenario uses MITRE ATT&CK® as a reference model. It is an expert SecTec interpretation and does not imply endorsement by MITRE.

Relevant ATT&CK tactics

Relevant ATT&CK techniques

SecTec technologies and vendors

The following hierarchy is derived from the approved ATT&CK-to-technology and technology-to-vendor mappings.