Multi-Factor Authentication — Authentication that requires evidence from two or more independent factor categories.
Why Multi-Factor Authentication matters in finance
It makes stolen passwords substantially less useful to an attacker.
Security is also a market-infrastructure question
In financial services, multi-factor authentication 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.