Credential Stuffing

Credential stuffing is a cyberattack technique where attackers use stolen username and password combinations, often sourced from data breaches, to gain unauthorized access to accounts across multiple platforms. It exploits the widespread habit of reusing credentials across different services. Once attackers gain access, they can steal sensitive data, commit fraud, or conduct further malicious activity.This attack poses a significant risk to banks, fintech companies, e-commerce platforms, social media networks, and gaming services, where user accounts often contain valuable financial or personal information. Because credential stuffing is typically automated, attackers can attempt thousands of logins within seconds using botnets or scripts.Mitigation requires layered defenses such as multi-factor authentication (MFA), bot detection, device and IP reputation analysis, behavioral monitoring, and rate limiting to prevent large-scale automated login attempts and protect both organizations and their users.