Anthropic announced on 2025-09-09 that it will replace its 30-day data retention policy for enterprise customers with a new solution called Enterprise Frontier Safeguards, following customer feedback. ^[1] Anthropic said Enterprise Frontier Safeguards gives businesses control over how their data is reviewed, stored, and managed, and allows automated safety monitoring without human review. ^[2] Anthropic announced on September 1, 2026, that it is introducing Enterprise Frontier Safeguards to address concerns from enterprise customers about its data retention policies. ^[3] Anthropic generates the vast majority of its revenue by selling to enterprises, and the market is crucial as it prepares for a major IPO. ^[4] The previous policy, introduced in June 2025 with the launch of Claude Fable 5 and Mythos 5, required 30-day retention of all traffic on those models to defend against misuse and cyberattacks. ^[5] Anthropic introduced its existing retention policy in June alongside the launch of Claude Fable 5 and Mythos 5, requiring 30-day retention of traffic to defend against misuse and cyberattacks. ^[6] Under the new system, companies will be able to conduct automated safety monitoring without requiring human review by Anthropic. ^[7]