Anthropic Data Policy U-Turn: Enterprise Data Moves Back to Client Clouds
Anthropic is preparing a significant shift in how it handles enterprise data, moving away from a system that stored customer information on its own servers toward one that keeps it inside each customer’s private cloud. The move, first reported by Bloomberg, marks a notable reversal for the Anthropic data policy that has drawn criticism from business customers since it was introduced earlier this year, and it signals just how much pressure AI labs are under to balance safety monitoring with corporate privacy demands.
Key takeaways
- Since June, Anthropic has stored all customer data from its Mythos and Fable models on its own servers for 30 days to detect potential misuse.
- Anthropic itself admitted the rule was unpopular with clients and represented a real business risk.
- Under the revised Anthropic data policy, information will remain in the customer’s own cloud instead of Anthropic’s infrastructure, though the 30-day window stays intact.
- The new system was built with input from more than 100 customers in regulated industries, according to Bloomberg.
- Anthropic developer Boris Cherny confirmed the change publicly on X, with rollout expected in the fall of 2026.
Anthropic’s original data storage policy and its purpose
Anthropic’s original approach centered on collecting a broad slice of customer activity to catch emerging threats before they spread. Since June, the company has kept all customer data generated through its Mythos and Fable models, along with future flagship releases, on its own servers for a full 30 days. The goal was straightforward: give Anthropic’s safety teams a window long enough to spot new cyberattacks that use the technology, including attempts to weaponize its models for malicious code or coordinated abuse.
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