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How secure are sessions and tokens?

Topic
Security & compliance
Asked by
Security teams
AdminUpdated Sep 11, 2026

Session security is one of the hardest parts of auth, and Atlas handles it at the core:

  • Rotating tokens with reuse detection — a replayed or stolen refresh token is caught and the session is invalidated.

  • Constant-time (timing-safe) verification to prevent timing side-channels.

  • A signed JWKS endpoint so your backend services can verify session JWTs cryptographically without a network round-trip.

  • No tokens in URLs — sign-in and verification use one-time tickets, so tokens don't leak into browser history, logs or referrer headers.

  • Exact-origin redirect checks and CSRF-bound OAuth state to close open-redirect and CSRF holes.

See session and token security for the full model.

Session tokens are rotating and timing-safe, with reuse detection and constant-time verification, and Atlas publishes a signed JWKS so your services can verify tokens cryptographically. Tokens never travel in URLs.

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How secure are sessions and tokens?