Business & household
Reused passwords in breach dumps
The single most common way both companies and families get compromised: one password, reused, already public.
How it works
- 01A site you used years ago is breached and its password list is traded.
- 02Attackers replay the same email and password against hundreds of services automatically.
- 03One hit on a mailbox unlocks password resets everywhere else.
How to spot it
- Assume any password you have used twice is already known.
- Prioritise rotating email, banking, and password-manager credentials first.
- Passkeys remove the problem entirely where they're supported.
How the fleet stops it
Argus
Argus continuously sweeps breach and dark-web sources for your domains, emails, and family accounts, then works with Cerberus to find every place the exposed password is still in use — and queues the rotation for your sign-off.