Credential Stuffing

Automated tools test reused usernames and passwords across login endpoints at machine speed.

Attackers tune requests to avoid lockouts and distribute traffic across residential proxies.

Once access is obtained, the account is monetized through fraud, data theft, or internal pivoting.

Any brand with customer login flows

Employees reusing passwords across work and personal accounts

Consumers without MFA or password managers

Retail and fintech accounts hijacked through reused passwords.

Employee accounts used as a starting point for mailbox compromise.

Loyalty and subscription accounts drained or resold.

Account takeover drives fraud, refunds, and support costs.

Internal compromise can cascade into wider business access.

Customers lose confidence when security basics appear weak.

Enforce MFA and impossible-travel detection.

Use breached-password screening and login anomaly detection.

Rate limit and challenge suspicious auth flows.

Educate users on password reuse and password manager adoption.