Fraud

What is credential stuffing?

An automated cyberattack in which stolen username-password combinations from data breaches are systematically tested against multiple online services, exploiting the widespread practice of password reuse. Credential stuffing attacks use botnets to attempt thousands of login combinations per minute and are a primary driver of account takeover fraud.

How it works

Example: An attacker obtains 2 million email-password pairs from a leaked e-commerce database and uses automated scripts to test them against a digital banking platform, successfully compromising 15,000 accounts where users had reused their passwords.