AWS Bedrock's decision to require data sharing with Anthropic for its upcoming Mythos AI models has sparked significant privacy concerns among enterprise users. The controversy centers on a 30-day data retention policy that critics fear could be exploited to train future models under the guise of abuse monitoring, potentially bypassing Zero Data Retention contracts. This has fueled broader skepticism regarding the trustworthiness of AI-as-a-service providers and their ability to keep private corporate data secure from model training.