Brute Force vs. Password Spraying: What's the Difference?
Brute force and password spraying are both login attacks, but they differ in whether they test many passwords against one account or a few passwords against many accounts.
The central difference
The classic brute force attack tests many possible passwords against a single account or hash. Password spraying turns the strategy around: a few common passwords are distributed against many accounts.
This means that attackers often bypass simple lockout mechanisms that only look at individual user accounts.
Why both attacks exploit different weaknesses
- Brute force benefits from weak passwords and poor hashing parameters.
- Password spraying exploits default passwords and weak corporate hygiene.
- Both become more dangerous when MFA is missing or poorly implemented.
Which defensive measures work best?
Strong passwords, MFA, rate limits and good monitoring cover different types of attacks together. It's not enough to just rely on one technology.
Password policies and sign-in telemetry are particularly important for organizations because spraying often runs against many employee accounts at the same time.
Quick checklist
The most important actions from this guide in compact form.
- Do not allow standard or basic passwords.
- Make MFA mandatory for critical accounts and teams.
- Monitor login attempts, not just configure hard lockouts.
Common questions
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