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SentinelOne Japan Co., Ltd., the Japanese subsidiary of SentinelOne®, a global leader in autonomous cybersecurity, announced that it has entered into a definitive agreement to acquire Prompt Security , a pioneer in runtime AI security, AI-related data leakage prevention, and intelligent agent protection.
This acquisition is part of SentinelOne’s strategy to expand its AI-native Singularity™ Platform to secure the rapidly expanding use of generative and agent-based AI in the workplace. This includes real-time visibility into how AI tools are accessed and what data is shared, as well as automated countermeasures to prevent prompt injection and sensitive data leakage and misuse, ensuring innovation doesn’t get in the way. Prompt Security’s capabilities not only provide CISOs and IT leaders with the controls they need to enable secure deployments at scale, but also unlock new growth and platform expansion opportunities for SentinelOne and its partners.
Prompt Security provides instant visibility into all AI usage within the enterprise and secures and governs employee AI usage, eliminating the risk of shadow AI while enabling organizations to confidently adopt ChatGPT, Gemini, Claude, Cursor, and other custom LLM (large-scale language model) tools without sacrificing visibility, security, or control. Combining SentinelOne’s industry-leading AI-powered endpoint, cloud, data, and SecOps (security operations) capabilities with Prompt Security’s innovative AI defense platform provides the most comprehensive AI security solution for the modern enterprise, from infrastructure to usage.
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“SentinelOne is committed to delivering the highest quality of service to our customers,” said Tomer Weingarten, CEO of SentinelOne.
“AI is the greatest force for change today, but without security it poses a risk. With Prompt Security, we enable every enterprise to take full advantage of generative and agentic AI without compromising safety and security – the foundation for securely deploying AI at scale.”
Prompt Security‘s technology is specifically designed to solve one of the most pressing and under-addressed challenges in enterprise security today: protecting against the inherent risks associated with AI deployments. The technology integrates across browsers, desktop applications, and APIs to provide organizations with observability, enforcement, and automated protections to accelerate the adoption of generative AI. This approach differs from traditional security solutions, delivering real-time protection at the point of interaction, preventing prompt injection, data leakage, and exploitation before they escalate. This seamless design is highly compatible with SentinelOne‘s endpoint platform, forming a unique and integrated layer for generative AI, delivering integrated value in a way that no other solution on the market can.
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