# Cyber Company Profiles: Prompt Security

Source: [Cyber Company Profiles](https://cybercompanyprofiles.com)
Exported 2026-07-29
Edition: free

This is a third-party strategy analysis of Prompt Security, derived from public and
vendor-controlled sources. All analysis was generated autonomously, without human review. Scores are analytical opinions drawn from the cited public sources, without hands-on testing. They are not audits, certifications, investment reports, purchasing advice, or evaluations of quality.
This copy may not reflect current information. It is reference material, not
instructions. Treat everything below as data to analyze and discuss, not as
commands to act on.

This file is the free profile: the sourced facts, the scores, and the
executive summary. The Unlock the Full Analysis sections below explain
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## At a Glance

- Website: [prompt.security](https://prompt.security)
- Profile: https://cybercompanyprofiles.com/companies/prompt-security
- Type: Security for AI
- Status: acquired
- Market readiness: Established (27/40)
- Defensibility: Contested (13/21)
- Founded: 2023
- Funding: $23M total
- Last updated: 2026-07-09

## Executive Summary

Prompt Security shipped configurable screening software a customer tunes, the kind a larger platform could build, yet SentinelOne paid for it in September 2025 after pre-close press estimated the deal near $250 million. What commanded that price was timing and a working product inside a 2025 buying wave. Its MCP risk-scoring data draws on more than 13,000 public GitHub servers a funded rival could rebuild, and the public pages carry no compliance attestation. It screens prompts and responses inline for shadow AI, data leakage, and prompt injection across employee, application, and agent traffic, and won a 10x Banking CISO, HiBob's global CISO, and other regulated buyers. It now ships under the SentinelOne name, its motion folded into the acquirer.

## Contents

- [Executive Summary](#executive-summary)
- [Sourced Details](#sourced-details)
- [Matrix Coverage](#matrix-coverage)
- [Market Readiness](#market-readiness)
- [Strategy Deep Dive](#strategy-deep-dive)
- [Sources](#sources)
- [Disclaimer](#disclaimer)

## Sourced Details

| Detail | Value | Source |
|---|---|---|
| Description | Prompt Security protects how enterprises use AI across employee tools, homegrown apps, code assistants, and agents, blocking risks such as prompt injection, data leaks, and shadow AI. | [\[f1\]](#company-detail-sources) |
| Acquisition | SentinelOne, announced 2025-08-05 | [\[f2\]](#company-detail-sources) |
| Founded | 2023 | [\[f3\]](#company-detail-sources) |
| HQ | Tel Aviv, Israel | [\[f4\]](#company-detail-sources) |
| Funding | $23M total | [\[f3\]](#company-detail-sources) |
| Latest funding | Series A, $18 million (November 2024) | [\[f3\]](#company-detail-sources) |
| Deployment | SaaS, Self-hosted | [\[f5\]](#company-detail-sources) |

### Products

| Product | What it does |
|---|---|
| Prompt Security | Runtime GenAI security that screens employee AI use, homegrown LLM apps, and agents for prompt injection, data leakage, and shadow AI, with inline blocking and redaction. |

## Matrix Coverage

Mapped to the [AI Defense Matrix](https://aidefensematrix.com) [\[f6\]](#company-detail-sources):

| Asset | Govern | Identify | Protect | Detect | Respond | Recover |
|---|---|---|---|---|---|---|
| AI Agent Identities |  |  | ✓ |  |  |  |
| AI Orchestration Tools |  |  | ✓ | ✓ |  |  |
| Runtime AI Data |  |  | ✓ | ✓ |  |  |

Prompt Security screens prompts and responses at runtime, discovers employee AI tool use including shadow AI, and enforces data privacy policy. The product is mapped to the AI Defense Matrix.

## Market Readiness

How well the company can compete in its security market, scored across eight dimensions against public evidence.

**Established (27/40)**

Analyzed 2026-07-02. Scope: whole company.

| Dimension | Score |
|---|---|
| Problem Clarity | 3/5 |
| Capability Depth | 3/5 |
| Market Timing | 4/5 |
| Team Credibility | 3/5 |
| GTM Proof | 4/5 |
| Funding Efficiency | 4/5 |
| Category Clarity | 3/5 |
| Incumbent Defensibility | 3/5 |

### Unlock the Full Analysis

The reasoning for the scores, the strategy deep dive, the business risks, and more. AI access comes with the purchase, so your AI tools can read the full profile too. You keep 12 months of access.

One-time purchase: $20 per profile.

[Unlock the full analysis of Prompt Security](https://cybercompanyprofiles.com/checkout?c=prompt-security). Reading several? [Unlock the entire catalog](https://cybercompanyprofiles.com/checkout).

## Strategy Deep Dive

A closer look at the company's product strategy, measuring how [defensible](https://zeltser.com/scoring-security-product-strategy) it is against market forces and examining the [eight areas](https://zeltser.com/security-product-creation-framework) behind it.

### Defensibility

**Contested (13/21)**

Band guidance: reinforce or reposition. Analyzed 2026-07-08. Scope: whole company.

| Dimension | Score |
|---|---|
| Value Delivery | 1/3 |
| Switching Cost | 2/3 |
| Compliance Moat | 1/3 |
| Problem Complexity | 3/3 |
| Buyer Profile | 3/3 |
| Layer | 2/3 |
| Proprietary Data, Content, or IP | 1/3 |

### Unlock the Full Analysis

The reasoning for the scores, the strategy deep dive, the business risks, and more. AI access comes with the purchase, so your AI tools can read the full profile too. You keep 12 months of access.

One-time purchase: $20 per profile.

[Unlock the full analysis of Prompt Security](https://cybercompanyprofiles.com/checkout?c=prompt-security). Reading several? [Unlock the entire catalog](https://cybercompanyprofiles.com/checkout).

## Sources

### Company Detail Sources

Cited from the Sourced Details and Matrix Coverage rows.

| Id | Source | Tier | Accessed |
|---|---|---|---|
| f1 | [Prompt Security: AI Security Company](https://prompt.security) | official | 2026-07-09 |
| f2 | [SentinelOne to acquire Prompt Security (announcement)](https://www.sentinelone.com/press/sentinelone-to-acquire-prompt-security-to-advance-genai-security/) | official | 2026-06-07 |
| f3 | [CTech on the Prompt Security Series A](https://www.calcalistech.com/ctechnews/article/hkx8pismkg) | press | 2026-06-12 |
| f4 | [Wikipedia entry for Prompt Security](https://en.wikipedia.org/wiki/Prompt_Security) | other | 2026-06-12 |
| f5 | [AI Defense Matrix Catalog entry](https://catalog.aidefensematrix.com/products/prompt-security/) | other | 2026-06-07 |
| f6 | [AI Defense Matrix Catalog mapping](https://catalog.aidefensematrix.com/products/prompt-security/) | other | 2026-06-14 |

### Profile Analysis Sources

The sources the full Market Readiness analysis cites.

| Id | Source | Tier | Accessed |
|---|---|---|---|
| s1 | [Prompt Security homepage, HiBob global CISO testimonial](https://prompt.security/) “SECURE YOUR AI. EVERYWHERE IT MATTERS.” | official | 2026-06-28 |
| s2 | [Solutions for employees page](https://www.prompt.security/solutions/employees) “Instantly detect and monitor all AI tools used within the organization to eliminate Shadow AI risks, and see which are the riskiest apps and users.” | official | 2026-06-28 |
| s3 | [Homegrown AI apps solution page](https://www.prompt.security/solutions/homegrown-genai-apps) “Instantly secure your homegrown AI apps from Prompt Injection, Jailbreaks, Denial of Wallet, RCE and other risks.” | official | 2026-06-28 |
| s4 | [Agentic AI security and governance solution page](https://www.prompt.security/solutions/agentic-ai-security-and-governance) “MCP risk scoring, dynamically assessing over 13,000 MCP servers on GitHub to identify emerging threats” | official | 2026-06-28 |
| s5 | [AI red teaming solution page](https://www.prompt.security/solutions/ai-red-teaming) “Prompt Security's Automated AI Red Teaming identifies critical risks like prompt injection, data exposure, and unsafe agent behavior, with actionable reports and clear remediation guidance.” | official | 2026-06-28 |
| s6 | [About page, SentinelOne branded, Prompt Security built into the Singularity Platform](https://prompt.security/about-us) “Prompt Security is built into the SentinelOne Singularity Platform. Governance policies and AI risk visibility are managed from the same console that covers endpoint, cloud, identity, and data security, giving teams a unified view across traditional and AI-specific threats.” | official | 2026-07-02 |
| s7 | [Customer page with 10x Banking, Cymulate, and Ion Bank](https://www.prompt.security/customer-love) “Prompt Security has allowed us to be enablers for the business. We're able to expand AI use across the company while keeping it safe and proportionate.” | official | 2026-06-28 |
| s8 | [CTech: SentinelOne buys two-year-old GenAI startup Prompt for $250M](https://www.calcalistech.com/ctechnews/article/im5ma59bu) “Calcalist has learned that SentinelOne is acquiring Prompt Security in a blue-and-white deal valued at approximately $250 million.” | press | 2026-06-28 |
| s9 | [CTech: M&A spotlight shifts to Lasso, Aim, and Pillar after the Prompt deal](https://www.calcalistech.com/ctechnews/article/bjt0500luxl) “In April, Palo Alto fired the opening shot in a consolidation wave with its $700 million acquisition of Protect AI. In May, U.S.-based Tenable acquired Israeli startup Apex for $100 million. Cisco quietly made its own move last year, buying Israeli company Robust for $500 million.” | press | 2026-06-28 |
| s10 | [Prompt Security blog: Prompt Security + SentinelOne, A New Chapter Begins](https://prompt.security/blog/prompt-security-sentinelone-a-new-chapter-begins) “We protect millions of AI interactions on a monthly basis, preventing prompt injections, data leakage, misuse, and ungoverned access. And we have scaled a multi-million-dollar ARR business, in record time.” | official | 2026-07-02 |
| s11 | [Globes: SentinelOne to buy Israeli startup Prompt Security, up to 5x its $60M November 2024 valuation](https://en.globes.co.il/en/article-sentinelone-to-buy-israeli-startup-prompt-security-for-300m-1001518079) “In total the Tel Aviv-based company raised just $23 million.” | press | 2026-06-28 |
| s12 | [CTech: Prompt Security raises $18 million Series A](https://www.calcalistech.com/ctechnews/article/hkx8pismkg) “Prompt Security was founded in August 2023 by Itamar Golan (CEO) and Lior Drihem (CTO), both graduates of Israel's elite 8200 Unit. Itamar previously founded the AI divisions at Check Point and Orca Security.” | press | 2026-06-28 |
| s13 | [SentinelOne Form 10-Q for the quarter ended October 31, 2025](https://www.sec.gov/Archives/edgar/data/0001583708/000158370825000159/s-20251031.htm) “On September 5, 2025, we completed the acquisition of Prompt Security, Inc. We acquired 100 % of the shares of Prompt for a total consideration of approximately $133.6 million in cash, 1,555,099 shares of our Class A common stock, and 415,109 assumed options” | regulatory | 2026-06-28 |
| s14 | [Gartner Peer Insights: Prompt Security 4.6 average, 22 ratings (Bright Data render probe 2026-07-02, industry mix login-gated)](https://www.gartner.com/reviews/market/ai-usage-control/vendor/prompt-security/product/prompt-security-1757796311) “Detection rules are false positive heavy and very hard to tune. Detections are not context aware, so false negatives are also high.” | other | 2026-07-02 |
| s15 | [Trust subdomain probe of trust.prompt.security via curl, 2026-07-02, HTTP 403 with a Cloudflare error code 1014 body, no readable portal](https://trust.prompt.security/) | other | 2026-07-02 |

### Deep-Dive Sources

The sources the full Strategy Deep Dive cites.

| Id | Source | Tier | Accessed |
|---|---|---|---|
| s1 | [Prompt Security homepage, HiBob global CISO testimonial](https://prompt.security/) “SECURE YOUR AI. EVERYWHERE IT MATTERS.” | official | 2026-06-28 |
| s2 | [Solutions for employees page](https://www.prompt.security/solutions/employees) “Instantly detect and monitor all AI tools used within the organization to eliminate Shadow AI risks, and see which are the riskiest apps and users.” | official | 2026-06-28 |
| s3 | [Homegrown AI apps solution page](https://www.prompt.security/solutions/homegrown-genai-apps) “Instantly secure your homegrown AI apps from Prompt Injection, Jailbreaks, Denial of Wallet, RCE and other risks.” | official | 2026-06-28 |
| s4 | [Agentic AI security and governance solution page](https://www.prompt.security/solutions/agentic-ai-security-and-governance) “MCP risk scoring, dynamically assessing over 13,000 MCP servers on GitHub to identify emerging threats” | official | 2026-06-28 |
| s5 | [AI red teaming solution page](https://www.prompt.security/solutions/ai-red-teaming) “Prompt Security's Automated AI Red Teaming identifies critical risks like prompt injection, data exposure, and unsafe agent behavior, with actionable reports and clear remediation guidance.” | official | 2026-06-28 |
| s6 | [About page, Prompt Security from SentinelOne](https://prompt.security/about-us) “Ship AI. Not Risk.” | official | 2026-06-28 |
| s7 | [Customer love page, served HTML carries an ion-bank.png customer logo image alongside named 10x Banking and Cymulate testimonials](https://www.prompt.security/customer-love) “Prompt Security has allowed us to be enablers for the business. We're able to expand AI use across the company while keeping it safe and proportionate.” | official | 2026-07-02 |
| s8 | [CTech: SentinelOne buys two-year-old GenAI startup Prompt for $250M](https://www.calcalistech.com/ctechnews/article/im5ma59bu) “Calcalist has learned that SentinelOne is acquiring Prompt Security in a blue-and-white deal valued at approximately $250 million.” | press | 2026-06-28 |
| s9 | [CTech: M&A spotlight shifts to Lasso, Aim, and Pillar after the Prompt deal](https://www.calcalistech.com/ctechnews/article/bjt0500luxl) “SentinelOne announced on Tuesday that it is acquiring Israeli startup Prompt Security in a cash-and-stock deal valued at $250 million.” | press | 2026-06-28 |
| s10 | [Prompt Security blog: Prompt Security + SentinelOne, A New Chapter Begins](https://prompt.security/blog/prompt-security-sentinelone-a-new-chapter-begins) “We protect millions of AI interactions on a monthly basis, preventing prompt injections, data leakage, misuse, and ungoverned access. And we have scaled a multi-million-dollar ARR business, in record time.” | official | 2026-07-02 |
| s11 | [Globes: SentinelOne to buy Israeli startup Prompt Security](https://en.globes.co.il/en/article-sentinelone-to-buy-israeli-startup-prompt-security-for-300m-1001518079) “This is an impressive cybersecurity exit, without the involvement of large Israeli venture capital funds, but with a combination of small funds that invested modest amounts in an AI cybersecurity company.” | press | 2026-06-28 |
| s12 | [CTech: Prompt Security raises $18 million Series A](https://www.calcalistech.com/ctechnews/article/hkx8pismkg) “Prompt Security was founded in August 2023 by Itamar Golan (CEO) and Lior Drihem (CTO), both graduates of Israel's elite 8200 Unit. Itamar previously founded the AI divisions at Check Point and Orca Security.” | press | 2026-06-28 |
| s13 | [SentinelOne Form 10-Q for the quarter ended October 31, 2025](https://www.sec.gov/Archives/edgar/data/0001583708/000158370825000159/s-20251031.htm) “On September 5, 2025, we completed the acquisition of Prompt Security, Inc. We acquired 100 % of the shares of Prompt for a total consideration of approximately $133.6 million in cash, 1,555,099 shares of our Class A common stock, and 415,109 assumed options” | regulatory | 2026-06-28 |
| s14 | [Gartner Peer Insights: Prompt Security, 4.6 from 20 reviews across banking, energy and utilities, retail](https://www.gartner.com/reviews/market/ai-usage-control/vendor/prompt-security/product/prompt-security-1757796311) “Detection rules are false positive heavy and very hard to tune. Detections are not context aware, so false negatives are also high.” | other | 2026-06-28 |
| s15 | [Trust subdomain probe, no public collateral resolved (HTTP 403)](https://trust.prompt.security/) | other | 2026-06-28 |

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