SentinelOne, the well-known AI-driven cybersecurity provider, has announced a definitive agreement to acquire Prompt Security, a leader in runtime AI security. The acquisition strengthens SentinelOne’s Singularity™ platform and is aimed at protecting the growing use of generative AI across enterprises, delivering real-time visibility and data protection without hindering innovation.
By integrating Prompt Security’s expertise, SentinelOne intends to equip CIOs and technical leaders with the tools needed to enable secure, scalable AI adoption. The move is designed to accelerate the growth and expansion of the SentinelOne platform and its partners while ensuring safer deployment of generative AI across organizations.
Prompt Security provides organizations immediate access to enterprise GenAI usage data, enabling controlled and secure AI usage. This capability helps prevent shadow AI risks and supports deployment of tools like ChatGPT and other large language models (LLMs) without compromising security or exposing sensitive data.
Combining SentinelOne’s leading endpoint, cloud, data and SecOps capabilities with Prompt Security’s advanced AI defense platform creates a comprehensive approach to securing AI across modern enterprises. The integration enables protection that extends from infrastructure to end-user interactions, offering seamless coverage across the stack.
“AI is the most transformative force in the world today — but without security it becomes a liability,” said Tomer Weingarten, CEO of SentinelOne. “With Prompt Security, we empower organizations to fully embrace GenAI and agentic AI without sacrificing safety. This acquisition lays the foundation for secure, large-scale AI deployment.”
Prompt Security’s technology addresses the urgent challenge of protecting organizations from risks tied to AI usage. It operates across browsers, desktop applications and APIs, providing real-time protections that block prompt injections, prevent data leakage and stop misuse before it can escalate.
With Prompt Security’s capabilities, SentinelOne will provide customers with:
- Real-time AI visibility across the enterprise, augmenting SentinelOne’s existing endpoint capabilities.
- Policy-based controls to enforce safe AI usage and prevent data exfiltration.
- Prevention of AI-targeted attacks, including immediate mitigation of prompt injection and other AI-related threats.
- Model-agnostic coverage across major LLM providers to ensure broad protection.
- Secure MCP gateway protections to ensure safe interactions between AI applications.
This acquisition significantly strengthens SentinelOne’s domain in securing the modern enterprise—from endpoints and cloud identity to GenAI. SentinelOne has been a pioneer in applying AI to security operations and was among the first pure-play cybersecurity firms to introduce agentic and GenAI capabilities within its platform.
Itamar Golan, co-founder of Prompt Security, emphasized the shared vision between both companies to enable organizations to harness AI as a strategic advantage while maintaining robust real-time protection. “As enterprise adoption of GenAI and agentic AI accelerates, security and privacy risks are shifting quickly from theoretical concerns to operational realities. SentinelOne shares our commitment to empowering teams and organizations to adopt AI as a clear advantage while delivering automated, real-time protection built for an AI-first world. By combining our innovation with SentinelOne’s platform, team, channel and customer base, we can make AI security practical for nearly every organization globally.”
The acquisition positions SentinelOne to offer an integrated security solution that addresses AI-specific threats and governance needs alongside traditional cybersecurity controls. Customers can expect tighter controls, improved visibility and automated defenses that reduce the operational risk of adopting generative and agentic AI technologies.