About Prompt Security
Prompt Security is a Technology company based in New York (United States) founded in 2023 by Lior Drihem and Itamar Golan, and was acquired by SentinelOne in August 2025. Enterprise Generative AI security platform is provided for risk prevention. Prompt Security has raised $23 million across 2 funding rounds from investors including Okta, SentinelOne and F5 Networks. Its chief executive, as recorded, is Itamar Golan. Its website prompt.security draws about 43 thousand monthly visits. Prompt Security offers products and services including GenAI Security Platform, Fuzzer, and PromptCast. Its focus areas include High Tech, Generative AI, Industry Specific Applications and IT. Its legal entity is PROMPT SECURITY, INC. Its competitors include BigID, Kiteworks and Sprinto; 3 of its 3 listed competitors have raised funding.
Company details
Prompt Security was founded in 2023 and is based in New York, United States. The company operates in the Generative AI security sector, where a platform is offered to address enterprise-level risks. Solutions are provided for preventing prompt injection attacks, data leaks, and shadow AI usage, while data security measures are implemented across operations.
- Headquarters New York, United States
- Founders Lior Drihem, Itamar Golan
- Stage Acquired
- SectorsTechnology
- Website category Computers Electronics and Technology · Computer Security
- Email••••••••
- Website prompt.security
- Social LinkedIn X
- Acquired by SentinelOne (Aug 2025)
- Legal Name Prompt Security, Inc.
- Total Equity Funding$23M (USD)
in 2 rounds
- Latest Funding Round$18M (USD), Series A
Nov 2024
- InvestorsOkta
& 6 more
- Acquired bySentinelOne
(Aug 2025)
Products & Services of Prompt Security
Prompt Security offers a comprehensive portfolio of products and services, including GenAI Security Platform, Fuzzer, and PromptCast.
Platform for monitoring and securing Generative AI tools against risks
Open-source tool to simulate attacks on GenAI apps for vulnerability detection
Podcast discussing AI security topics and risks
Funding Insights of Prompt Security
Prompt Security has successfully raised a total of $23M across 2 strategic funding rounds. The most recent funding activity was a Series A round of $18 million completed in November 2024. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $23M
- Total Rounds 2
- Last Round Series A — $18M
- First Round $5M
(Jan 2024)
- Investors Count 6
All 2 funding rounds of Prompt Security with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Nov 2024 | $18M | Series A | – | Jump Capital | |
| Jan 2024 | $5M | Seed | – | Hetz Ventures |
7 investors in total: 7 institutional.
Investors in Prompt Security
Prompt Security has secured backing from 7 investors, including venture fund and institutional investors. Prominent investors backing the company include Okta, SentinelOne and F5 Networks.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Venture capital and funds of fund firm focused on multiple sectors | jumpcap.com | Chicago, United States | ||
Early-stage Israeli startups are supported through venture capital investments. | 2018 | hetz.vc | Tel Aviv, Israel | |
Investments in seed to Series A stage companies are targeted. | ridge.vc | San Francisco, United States | ||
Tech focused expansion stage VC firm in the US | fourriversgroup.com | San Francisco, United States | ||
Cloud-based identity management and authentication are provided for enterprises. | 2009 | okta.com | San Francisco, United States | |
Cloud based endpoint security solutions | 2013 | sentinelone.com | Mountain View, United States | |
Cloud-based ADC networking solutions are provided for application delivery. | 1996 | f5.com | Seattle, United States |
Investor details for Prompt Security
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People of Prompt Security
8 people are tracked at Prompt Security (7 in leadership, 1 in team).
| Name | Role | Group |
|---|---|---|
Lior Drihem | Co-Founder & CTO | Leadership |
Itamar Golan | Co-Founder & CEO | Leadership |
Joshua Falgout | Director Of Customer Success | Leadership |
Dennis V. | Director, Strategic Accounts | Leadership |
Chad Jawors | Head Of Channels And Alliances | Leadership |
Vitaly Neyman | Co-founder & Chief Architect | Leadership |
Yoav Lasman | VP R&d | Leadership |
Alan Merriam | Avp, North America Channels | Team |
Complete people profiles for Prompt Security
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Timeline of Prompt Security
4 dated milestones of Prompt Security across 2 years, from founding to its latest funding, stage changes and deals.
- Founded Prompt Security is founded.
- Funding First funding round of $5.0M.
- Funding Latest funding round, Series A, of $18.0M.
- Exit Acquired by SentinelOne.
Competitors of Prompt Security
Prompt Security has 3 listed competitors in our database, 3 of them funded. They include BigID, Kiteworks and Sprinto.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| bigid.com | 2016 | New York, United States | $307.6M | 110 | Cloud-based platform for data privacy management software is provided. | |
| kiteworks.com | 1999 | Palo Alto, United States | $649.56M | 91 | Cloud-based data security and privacy solutions are delivered. | |
| sprinto.com | 2020 | San Francisco, United States | $31.98M | 286 | A platform for continuous security and compliance automation is provided. |
Detailed competitors of Prompt Security
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
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Web traffic of Prompt Security
The website of Prompt Security (prompt.security) receives about 43K visits a month and ranks #908,067 among all websites worldwide, #2,367 in Computer Security.
- Monthly visits43K
▲ 27.3% vs previous month
- Unique visitors13.9K
per month
- Global rank#908,067
among all websites
- Category rank#2,367
Computers Electronics and Technology · Computer Security
- Bounce rate43%
- Pages per visit1.8
- Average visit12 sec
- DevicesDesktop 38% · Mobile 62%
Websites whose visitors overlap most with Prompt Security. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| protectai.com | 100% | 40.4K | #924,914 | View details | |
| layerxsecurity.com | 100% | 144.1K | #327,564 | View details | |
| fastvue.co | 100% | #1,286,961 | View details | ||
| cybermagazine.com | 100% | 85.2K | #431,700 | View details | |
| lasso.security | 100% | 40.6K | #978,485 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 14 similar websites and full traffic analytics for Prompt Security
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 14 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Top companies in Cybersecurity & Data Protection
3 companies that operate in the same segment as Prompt Security (Cybersecurity & Data Protection) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Cloud based website security solutions | 2009 | San Francisco, California, United States | USD 332.1 M | USD 1.67 B | 7,330 | |
Cybersecurity and zero trust solutions are delivered for secure networks. | 2007 | San Jose, California, United States | USD 148 M | USD 3.35 B | 9,616 | |
Cloud-based identity management solutions are provided for enterprises. | 2002 | Denver, Colorado, United States | USD 136.89 M | USD 36.94 M | 821 |
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Related news about Prompt Security
Complete news archive for Prompt Security
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Frequently Asked Questions about Prompt Security
Prompt Security was founded in 2023 and raised its 1st funding round 1 year after it was founded.
Prompt Security is headquartered in New York, United States. It is registered at New York, New York, United States.
Itamar Golan is the CEO of Prompt Security, as recorded in our data. They have also founded this company.
Prompt Security is a funded company, having raised a total of $23M across 2 funding rounds to date. The company's 1st funding round was a Seed of $5M, raised on Jan 2024.
Prompt Security was founded in 2023 and is based in New York, United States. The company operates in the Generative AI security sector, where a platform is offered to address enterprise-level risks. Solutions are provided for preventing prompt injection attacks, data leaks, and shadow AI usage, while data security measures are implemented across operations.
Prompt Security offers GenAI Security Platform, Fuzzer, and PromptCast.
Prompt Security has 7 investors. Key investors include Okta, SentinelOne, F5 Networks, Jump Capital, and Hetz Ventures.
Prompt Security operates through Prompt Security, Inc..
Yes. Prompt Security was acquired by SentinelOne in August 2025.