Mountain View, Calif., August 5, 2025 – SentinelOne® (NYSE: S), a global leader in AI-native cybersecurity solutions, has announced it has signed a definitive agreement to acquire Prompt Security, a pioneering Israeli-based startup known for its innovative approach to securing artificial intelligence in runtime environments and preventing AI-driven data leakage.

This acquisition marks a significant strategic move for SentinelOne as it seeks to bolster its Singularity™ Platform with advanced capabilities designed to secure generative AI (GenAI) and agentic AI deployments within modern enterprises. The deal reflects an industry-wide recognition of the mounting risks and security challenges associated with AI technologies, particularly as organizations accelerate the adoption of AI-driven agents and automation tools in the workplace.

Background: Securing AI in Real-Time Environments

The rapid evolution of generative AI, including large language models (LLMs) and autonomous AI agents, has transformed how organizations interact with data and processes. However, this shift has also amplified concerns about vulnerabilities such as data leakage, prompt injection attacks, and malicious manipulation of AI agents—particularly in enterprise environments where sensitive information is frequently handled.

Prompt Security, founded in 2023, has quickly established itself as a key player in mitigating these risks. Its runtime security platform provides comprehensive visibility, monitoring, and policy enforcement to safeguard AI models and intelligent agents across multi-cloud and hybrid infrastructures. By integrating Prompt Security’s technology, SentinelOne aims to deliver end-to-end zero-trust AI security for real-time operations—a capability increasingly demanded by Fortune 500 companies exploring AI transformation at scale.

Deal Dynamics and Strategic Impact

While the financial terms of the transaction were not publicly disclosed, industry analysts estimate the deal at a value between $50 million and $100 million, underscoring the competitive race among cybersecurity vendors to dominate the emerging AI security landscape.

Key objectives of the acquisition include:

• Extending Visibility: Unifying endpoint, cloud, and AI visibility for enhanced threat detection and incident response.
• Protecting Data and IP: Preventing unauthorized access, insider threats, and prompt injection attempts targeting AI workloads.
• Enabling Policy Governance: Automating policy controls and regulatory compliance for organizations deploying AI both internally and in customer-facing solutions.
• Enhancing Productivity: Empowering security teams to adopt proactive security for next-gen AI agents and automation tools.

With Prompt Security’s cloud-native platform and integrations, SentinelOne is positioned to become the go-to provider for organizations seeking comprehensive AI-native protection in a multi-cloud world.

Industry Needs Driving Innovation

The need for robust AI security has never been more acute. According to Gartner, by 2026 over 80% of enterprises are expected to deploy GenAI applications for mission-critical workloads. The surge in AI adoption, however, comes with heightened risks: IBM’s 2024 Cost of a Data Breach Report noted that breaches involving AI-driven components cost organizations an average of 15% more than traditional incidents.

Major breaches in recent years have highlighted vulnerabilities tied to misconfigured AI agents and unintended data exposures, with regulatory scrutiny intensifying globally. The European Union’s recently adopted AI Act, along with evolving frameworks from the U.S. National Institute of Standards and Technology (NIST), place stricter demands on organizations to operationalize AI governance and security best practices.

“Today’s AI-powered enterprises face a rapidly evolving threat landscape,” said Tomer Weingarten, CEO of SentinelOne. “By acquiring Prompt Security, we’re doubling down on ensuring that security and innovation go hand-in-hand as customers embrace GenAI and autonomous agents. Our combined technology empowers security teams to proactively defend their most critical AI assets in real time.”

Prompt Security: Company Overview

Prompt Security, headquartered in Tel Aviv, serves a global client base in finance, healthcare, retail, and technology. The company’s platform allows for:

• Deep visibility into AI model activity, prompt flows, and agent behaviors
• Advanced detection of data exfiltration and model misuse
• Automated enforcement of security policies and compliance requirements
• Support for leading AI toolchains and frameworks such as OpenAI, Hugging Face, and Google Vertex AI

Prompt Security has been recognized in industry awards for its role in addressing prompt injection and supply chain risks in LLM-powered environments.

Market Implications and Expert Reactions

The acquisition is widely viewed as a catalyst for further consolidation in the AI security space. With leading cybersecurity and cloud vendors ramping up their own AI-native offerings—recently exemplified by Palo Alto Networks’ acquisition of Dig Security and Microsoft’s integration of AI security features into Defender—SentinelOne’s move signals intensifying competition for enterprise wallet share.

Tech industry analysts forecast that the global AI security software market will surpass $10 billion in annual revenues by 2027, with a CAGR of over 30%. For SentinelOne, the move strengthens its competitive advantage against larger rivals as it seeks to capture a greater share of this fast-growing sector.

Looking Ahead

As generative AI and intelligent agents become foundational to digital transformation, robust security solutions are now a core business requirement. By integrating Prompt Security, SentinelOne advances its mission to deliver unified, AI-native security for the world’s most innovative organizations—positioning both its customers and the broader industry to navigate the AI-powered future safely and confidently.