SentinelOne Expands AI Security Features and Acquires Prompt Security

SentinelOne Inc. announced an expansion of its AI Security Platform on February 6, 2026, introducing new Data Security Posture Management (DSPM) features aimed at protecting AI systems from data risks. The company is also focusing on governance for enterprise AI systems through its acquisition of Prompt Security and backing early-stage cybersecurity ventures via S Ventures, including an investment in Mesh Security.