What is credential theft?

Credential theft steals authentication information: usernames, passwords, API keys, and session tokens. Attackers use stolen credentials to access accounts, impersonate victims, and enable further attacks.

Email-based credential theft typically uses phishing: fake login pages capturing entered credentials. Other methods include: malware keyloggers, man-in-the-middle attacks on login pages, and data breaches exposing stored credentials.

Impact extends beyond immediate access. Credential reuse means stolen passwords may work across multiple services. A compromised email password can enable: account takeover, further phishing, identity theft, and financial fraud.