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Duo Security

Duo Security protects access with multi-factor authentication that's actually usable.

Free tierPrice verified 2026-10-04Visit site ↗
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Our verdict

Who it's for

Multi-factor authentication for enterprises

Who should look elsewhere

Expensive

Pros

  • +Enterprise MFA leader
  • +Good security
  • +Easy setup
  • +Many integrations
  • +Cisco backing

Cons

  • −Expensive
  • −Cisco pricing complexity
  • −Per-user costs
  • −UI dated
  • −Better free alternatives

Key features

  • ✓Two-factor authentication
  • ✓Device trust
  • ✓Adaptive access
  • ✓Single sign-on
  • ✓Remote access
  • ✓Endpoint security

Pricing

PlanPriceBillingNotes
Free$0month2FA for 10 users; Mobile app; Basic integrations
Essentials$3monthUnlimited users; Single sign-on; User self-service
Advantage$6monthAdaptive MFA; Device trust; VPN integration
Premier$9monthAll Advantage; Zero trust; Risk-based auth

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