Antifraud controls are security checks that look for suspicious behavior, unusual transactions, and impersonation attempts. They are common in payment systems, account creation, login flows, and automated checkout, where attackers try to blend in with legitimate activity. These controls may combine device fingerprinting, velocity checks, identity verification, transaction scoring, and rules that flag risky changes in location, amount, or purchase pattern.
In cyber security, antifraud controls matter because many attacks are not about breaking encryption; they are about abusing trusted workflows. A stolen account, a spoofed agent, or a manipulated shopping bot may still look valid unless defenses compare the action against expected behavior. Strong antifraud programs help block account takeover, card testing, synthetic identities, and unauthorized purchases. In agentic commerce, they also help verify that a bot is acting within approved limits and not being steered by malicious input.