QUICK DEFINITION
Account Takeover — Unauthorized control of a legitimate user or employee account.
WHY IT MATTERS
Why Account Takeover matters in finance
Compromised accounts can bypass perimeter defenses and enable fraud, data access or operational disruption.
FINANCIAL SYSTEM CONTEXT
← Back to the Financial Security GlossarySecurity is also a market-infrastructure question
In financial services, account takeover should be understood in relation to operational continuity, data integrity, payments, market infrastructure and interconnected dependencies. A control can be technically effective while still leaving material resilience risk if critical services cannot continue or recover during disruption.