Prompt Security vs Zenity

Prompt Security is an AI security product that controls how employees use AI tools and protects the AI applications and agents companies build. Itamar Golan (CEO) and Lior Drihem (CTO), who had worked at Check Point and Orca Security, founded it in August 2023; it is based in Tel Aviv. It raised $23 million: a $5 million seed round led by Hetz Ventures (January 2024) and an $18 million Series A led by Jump Capital (November 2024), with Ridge Ventures, Okta and F5 joining. SentinelOne, the Mountain View, California security company, agreed to buy Prompt Security on August 5, 2025 and completed the deal on September 5, 2025. Its Form 8-K puts the consideration at approximately $180 million in cash and SentinelOne Class A stock. Prompt Security is still sold under its own name, as part of SentinelOne's Singularity Platform. The product page is on sentinelone.com; prompt.security now hosts research and free tools such as the open-source Prompt Fuzzer, and the old press release we checked there redirects to SentinelOne. **What it does** SentinelOne's Prompt Security page lists three areas. AI Usage Control inventories the AI tools and code assistants employees and developers use, including unsanctioned shadow AI, and redacts sensitive data and enforces policies across more than 15,000 AI services in real time. It also covers GitHub Copilot, Cursor and Claude Code, keeping secrets and intellectual property out of them. AI Application Security tests homegrown AI apps for prompt injection, jailbreaks and data poisoning before deployment, runs a real-time AI firewall, and turns red-team findings into guardrails. Agentic AI Security finds shadow MCP servers and unsanctioned agents, enforces least-privilege access for agents and keeps a searchable audit log. SentinelOne says Prompt's MCP gateway scores the risk of more than 13,000 known MCP servers and can allow, block, filter or redact their actions. Prompt deploys through a lightweight agent and browser extensions, and covers major LLM providers, including OpenAI, Anthropic and Google, and self-hosted models. **Product changes since the acquisition** At its OneCon conference in November 2025 SentinelOne launched Prompt Security for Employees, for AI Code Assistants and for AI Applications, plus Prompt Security for Agentic AI in beta. At RSAC in March 2026 it announced Prompt AI Agent Security, a discovery and governance control plane for agents and MCP servers (agent posture management was in preview), and Prompt AI Red Teaming for testing homegrown AI apps. **Frameworks** Neither SentinelOne's Prompt Security pages nor prompt.security name the EU AI Act, ISO 42001 or the NIST AI RMF; they refer only to meeting compliance requirements in general terms. This profile lists no frameworks. **Who it's for** Companies that want to let employees use generative AI and coding assistants while controlling data exposure, especially existing SentinelOne customers. Named customers include 10x Banking and Carnival Corporation.

Zenity is a security and governance platform for AI agents: agents inside SaaS tools, agents built in-house on cloud AI platforms, and coding and personal agents on employee devices. It was co-founded by Ben Kliger (CEO) and Michael Bargury (CTO). It launched in April 2021 as a security platform for low-code/no-code development, added support for enterprise AI copilots in November 2023 and now focuses on agents. Research and development is in Tel Aviv, and go-to-market and operations are led from New York. Zenity says it has more than 230 employees. Its company page lists a $5 million seed round (November 2021), a $16.5 million Series A led by Intel Capital (September 2023), a strategic investment from Microsoft's M12 (July 2024), a $38 million Series B co-led by Third Point Ventures and DTCP (October 2024) and a $125 million Series C led by Norwest (August 2026). Zenity released a new version of its platform in August 2026, organized in three parts. Surface covers AI Observability (an inventory of agents, MCP servers, tools and data access, including agents built without security review), AISPM (configuration and permission checks before agents go live) and Exposure Management (which access paths are actually exploitable). Enforce covers Runtime Boundaries, which checks each agent action in real time and allows it, blocks it or shuts the agent down, including multi-step chains such as data exfiltration or privilege escalation; Agentic Identity, which gates actions on the identity an agent acts for in Okta or Microsoft Entra ID; and MCP Security, a gateway that allows, modifies or blocks tool calls and flags tool poisoning, rug pulls, shadow servers and over-scoped servers. Protect is AIDR, which detects direct and indirect prompt injection, data exfiltration, tool misuse and memory poisoning with LLM-based intent detection. Zenity names Microsoft 365 Copilot, Copilot Studio, Power Platform, ChatGPT Enterprise, Claude Enterprise, Salesforce Agentforce, ServiceNow, Amazon Bedrock and AgentCore, Google Vertex AI and Microsoft Foundry among the platforms it covers. For coding agents such as Cursor, Claude Code, Codex and GitHub Copilot, it collects activity through native agent hooks and OpenTelemetry and enforces policy through its MCP gateway. It sends agent findings to AWS Security Hub (in OCSF format) and to ServiceNow SecOps. **AI compliance coverage** Zenity maps its detections to the OWASP LLM Top 10 and MITRE ATLAS. We found no mapping on its site to the EU AI Act, the NIST AI RMF or ISO 42001. Its trust center says Zenity holds SOC 2 Type II and is ISO 27001 compliant and ISO 27701 compliant; reports are available on request. **Who it's for** Large enterprises running many agents across Microsoft, Salesforce, ServiceNow and OpenAI platforms, plus homegrown and coding agents, that want one policy layer over all of them. Zenity says most of its customers are Fortune 500 or Global 2000 companies; SoftBank Corp. is the only one named, in its Series C announcement. Gartner named Zenity a Cool Vendor in Agentic AI TRiSM (September 2025), and Zenity quotes an April 2026 Gartner report calling it the company to beat in AI agent governance.