PASSWORD-SECURITY5 MIN READ
Read the reuse multiplier
Interpret password-reuse data and connect it to unique passwords, password managers, and MFA.
Password reuse is not just a bad habit; it is an attack multiplier after a breach. Reuse Risk From One Research Dataset Dataset scale Users and passwords analyzed 28.8M users / 61.5M passwords Services compared Distinct online services 107 services Exact reuse Users with the same password across sites 38% of users Modified reuse Users with variants of an existing password 20% of users Fast variant cracking Password pairs cracked within 10 attempts 16M+ pairs Exact reuse creates direct credential-stuffing risk.
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