PRODUCT NOTES · SENTINELONE
Prompt Security (SentinelOne): AI endpoint control facts (2026)
Short answer
By The Device Desk · Endpoint AI Finder · Published 2026-10-11
Desk research from public vendor pages read on 27 September and 11 October 2026. Profiles follow our published method; we did not run the products.
Vendor pages read September and October 2026 · updated 2026-10-13
Owner: SentinelOne (acquisition announced 5 August 2025; SentinelOne's blog of 3 September 2025 is titled SentinelOne Acquires Prompt Security)
Where do Prompt Security's controls sit?
- DEV Filled marker: described on the product pages we read
- DEV Hatched marker: partly described (another component, a narrower scope, or method not detailed)
- DEV Dashed marker: not in our sources (it may exist; we did not find it)
| Type | Status | What the pages say | Source |
|---|---|---|---|
| On-device control | Described | A dedicated AI endpoint agent detects new AI agents, skills and connectors and applies runtime policies; it names GitHub Copilot, Cursor and Claude Code among the code assistants it inventories. | Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Browser extension | Described | A browser extension inspects prompts, redacts sensitive data and discovers shadow AI. | Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Network or SSE proxy | Not in our sources | Not described on the pages we read. | None |
| AI or MCP gateway | Not in our sources | Not described on the pages we read. | None |
| Policy only | No product needed | Policy is your own work whichever product you choose. | None |
How does Prompt Security decide on an AI action?
| Decides on a tool call before it runs | Not in our sources |
|---|---|
| Can warn or ask instead of only blocking | Not in our sources |
| Can block an agent, tool or action | Not in our sources |
| Has a watch-only or simulation mode | Not in our sources |
How does Prompt Security reach devices, and which AI tools does it name?
| How it reaches devices | Two local sensors: a browser extension and a dedicated AI endpoint agent, managed from the SentinelOne Singularity Platform. Prompt Security argues that MDM or EDR integrations, which mostly run scripts periodically, are not enough. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
|---|---|
| Rolls out through EDR or device management you run | PartlyIts own agent and extension, managed in the SentinelOne console; it does not ride on other EDR or MDM tools. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Names the coding agents it covers | MatchesNames GitHub Copilot, Cursor and Claude Code. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| AI tools and surfaces named | AI tools and code assistants such as GitHub Copilot, Cursor and Claude Code, agents and MCP servers, and homegrown AI apps. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| Built into | Built into the SentinelOne Singularity Platform. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| Works with | None in our sources |
What else does Prompt Security cover?
| Controls what goes into browser AI | MatchesThe browser extension inspects prompts and redacts sensitive data. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
|---|---|
| Records who or what took each action | Not in our sources |
| Also covers SaaS, cloud or homegrown AI | MatchesCovers homegrown AI apps from testing to runtime. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
What does Prompt Security cost?
Not published.
Source: SentinelOne: Prompt Security · Read 27 Sep 2026
Where is Prompt Security strong, and where are its limits?
Strengths and limits come from the product's own pages and our sources; a limit can be something we did not find.
Strengths
- Covers both the browser and the device, with its own browser extension and AI endpoint agent.
- Inventories AI tools and code assistants, including unsanctioned ones, and finds shadow MCP servers.
- Built into SentinelOne Singularity, and also covers homegrown AI apps from testing to runtime.
Limits
- Two new local sensors to roll out, a browser extension and an endpoint agent, unless you already run SentinelOne.
- Tool-call decisions, blocking, warning and activity records for agent actions are not described on the pages we read, and no pricing is published.
What does Prompt Security say about itself?
What has Prompt Security announced recently?
- 15 Sep 2026
SentinelOne said Latio's 2026 AI Security Market Report named it an AI Security Platform Leader, citing its Prompt Security offering.
Source: SentinelOne press release: Latio 2026 AI Security Market Report · Read 27 Sep 2026
- 3 Sep 2025
SentinelOne's blog post titled SentinelOne Acquires Prompt Security was updated on this date.
Source: SentinelOne blog: SentinelOne Acquires Prompt Security · Read 11 Oct 2026
- 5 Aug 2025
SentinelOne announced a definitive agreement to acquire Prompt Security for cash and stock.
Source: SentinelOne press release: agreement to acquire Prompt Security · Read 27 Sep 2026
Who should shortlist Prompt Security?
Consider Prompt Security if you already run SentinelOne Singularity, or if you need an inventory of AI tools and coding assistants first.
In our example finder profiles, Prompt Security is in the first group for: SentinelOne shop watching coding agents.
How does Prompt Security compare with each other product?
- AI Access Security and Prompt Security
- Workforce Protector and Prompt Security
- Bay and Prompt Security
- Bloom and Prompt Security
- Cloudflare AI Gateway and Prompt Security
- Falcon Guardian and Prompt Security
- Ent and Prompt Security
- Glow and Prompt Security
- Harmonic and Prompt Security
- Koi and Prompt Security
- Lasso and Prompt Security
- Neo and Prompt Security
- Noma and Prompt Security
- Onyx and Prompt Security
- Pluto and Prompt Security
- Prompt Security and Sun
- Prompt Security and Zenity
- Prompt Security and Zscaler