How do you prevent an agent from exfiltrating secrets from logs or configs?

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To prevent an agent from exfiltrating secrets, a multi-layered approach is crucial, starting with the principle of least privilege for any service or human access to systems handling sensitive data. Crucially, secrets should ideally never reside directly in logs or configurations in plain text; instead, implement robust log redaction and masking techniques to automatically obscure sensitive data before it's written. For configuration files, secrets must be stored in dedicated secret management solutions like HashiCorp Vault or AWS Secrets Manager, and any remaining sensitive data within configs should be encrypted at rest. Furthermore, strict access controls and authorization policies must be enforced, combined with comprehensive monitoring and alerting systems that detect unusual access patterns or attempts at data egress from log and config directories. Regular security audits and vulnerability assessments are also vital to identify and remediate potential weak points, ensuring ongoing protection against secret exfiltration.