Developing Enterprise Frontier Safeguards with our customers

Anthropic has announced Enterprise Frontier Safeguards (EFS), an offering that pairs the privacy of zero data retention with monitoring designed to detect misuse. Under EFS, data sits in cloud infrastructure controlled by the customer rather than by Anthropic. Rollout will be phased, beginning later this fall, and eligible customers will get zero data retention on Fable 5 and Fable 5.1 in the meantime. Anthropic says it built the product with more than 100 customers across sectors including finance, healthcare, law and the public sector, and with its cloud partners AWS, Google Cloud and Azure.

The company explains the problem it is addressing. Mythos-class models such as Claude Fable 5.1 bring large gains in capability but also potential for misuse and autonomous misbehavior. Anthropic reports substantial evidence of attempted misuse, from fraud to sophisticated cyberattacks and stolen enterprise credentials. Because serious misuse can span many sessions and accounts, it argues that checking each interaction and discarding the data is insufficient, which is why it introduced 30-day retention with Fable 5. It states that it has not trained on enterprise data absent express consent. Many regulated customers found retention difficult.

EFS responds with three features. Monitoring signals go directly to the customer for review. Activity data can be kept in the customer's own cloud account, protected by its own keys, access rules and audit logs. Automated tools examine recent traffic over a moving window for signs of serious misuse, such as efforts to build cyber-offense or biological capabilities, and indications of leaked or stolen credentials, and no review by Anthropic staff is needed. Customer storage, keys and automated review are each opt-in and leave model behavior, pricing and rate limits unchanged.

Anthropic does not charge for EFS; cloud providers bill for any storage customers choose.