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The Argon2 Dummy Hash: 50 Milliseconds Between Username Enumeration and Peace of Mind

If your login responds in 1ms for unknown users and 50ms for known ones, you have an oracle. The fix is 3 lines. The trap that breaks it 6 months later is just one config change.

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venerdì 19 giugno 2026·dev.to
The Argon2 Dummy Hash: 50 Milliseconds Between Username Enumeration and Peace of Mind
If your login responds in 1ms for unknown users and 50ms for known ones, you have an oracle. The fix is 3 lines. The trap that breaks it 6 months later is just one config change.