Credential stuffing: What is it, are you at risk?

**Credential stuffing explained:** This blog describes how attackers leverage previously compromised username/password pairs with automation tools, proxies, and service-specific configs to perform large-scale account takeover (citing GM and Zola), explains why credential reuse and weak controls enable these attacks, and recommends defenses including password managers, multi-factor authentication, rate limiting, CAPTCHAs, and IP blocklisting.