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Security

The Linea protocol and operator stack offers certain security capabilities. Such capabilities are provided through both protocol guarantees and operator-controlled integrations.

Define security capabilities​

Linea provides protocol-level guarantees, while operators implement operational controls.

Protocol-level guarantees​

The Linea protocol offers certain security guarantees:

  • Cryptographic correctness guarantees via zk-SNARKs
  • Byzantine fault tolerant consensus (QBFT)
  • Finalization security inherited from the finalization layer
  • Protocol-level security invariants

Operational security integrations​

Operators retain full control over their secure boundaries:

  • Infrastructure isolation and network security controls
  • Role-Based Access Control (RBAC) for APIs and services
  • Secure key management via KMS-backed signing and remote signing through Web3Signer
  • Monitoring and incident response tooling