About Sublime Security
Sublime Security is a Technology company based in Washington (United States) founded in 2017 by Josh Kamdjou. Anti-phishing email security is delivered through AI-driven detection. Sublime Security has raised $239.8 million across 4 funding rounds from investors including IVP, Citi Ventures and Index Ventures. The company has 57 employees. Its chief executive, as recorded, is Josh Kamdjou. Its website sublime.security draws about 52 thousand monthly visits. Its focus areas include Enterprise Infrastructure, Cybersecurity, Email Security and Programmable.
Company details
Sublime Security was founded in 2017 in the cybersecurity sector. Email security operations are centered on preventing attacks via an AI-powered platform with a transparent detection engine. Control over email incidents is enabled, reducing response time. As a detection and response tool, custom rules are supported for blocking phishing, hunting threats, and addressing malware, ransomware, business email compromise, and credential phishing.
- Headquarters Washington, United States
- Employees 57
- Founders Josh Kamdjou
- SectorsTechnology
- Website category Computers Electronics and Technology · Computer Security
- Website sublime.security
- Social LinkedIn X
- Total Equity Funding$239.8M (USD)
in 4 rounds
- Latest Funding Round$150M (USD), Series C
Oct 2025
- InvestorsIVP
& 8 more
- Employee Count57
Funding Insights of Sublime Security
Sublime Security has successfully raised a total of $239.8M across 4 strategic funding rounds. The most recent funding activity was a Series C round of $150 million completed in October 2025. 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 $239.8M
- Total Rounds 4
- Last Round Series C — $150M
- First Round $9.8M
(Feb 2023)
- Investors Count 9
All 4 funding rounds of Sublime 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 |
|---|---|---|---|---|---|
| Oct 2025 | $150M | Series C | – | Georgian | |
| Dec 2024 | $60M | Series B | – | IVP | |
| Apr 2024 | $20M | Series A | – | Index Ventures | |
| Feb 2023 | $9.8M | Seed | – | Decibel |
9 investors in total: 9 institutional.
Investors in Sublime Security
Sublime Security has secured backing from 9 investors, including venture fund and institutional investors. Prominent investors backing the company include IVP, Citi Ventures and Index Ventures.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Growth in technology companies is supported through venture capital. | ivp.com | Menlo Park, United States | ||
Corporate venture capital firm backed by Citi | citi.com/ventures | San Francisco, United States | ||
Venture capital investments in technology startups and entrepreneurs. | indexventures.com | |||
Decibel is focused on investing in technical software startups. | decibel.vc | |||
Early-stage tech investments are made primarily in US companies. | slow.co | New York, United States | ||
Venture capital is provided to expanding B2B software companies. | georgian.io | |||
Growth equity investments are made by the private equity firm. | avenirgrowth.com | |||
Venture advisory services are provided to startups and investors. | 01a.com | |||
Diversified financial services are offered through commercial banking operations. | citigroup.com |
Investor details for Sublime Security
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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People of Sublime Security
1 people are tracked at Sublime Security (1 in leadership); the tracked headcount is 57.
| Name | Role | Group |
|---|---|---|
Josh Kamdjou | Co-Founder & CEO | Leadership |
Complete people profiles for Sublime Security
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Timeline of Sublime Security
3 dated milestones of Sublime Security across 8 years, from founding to its latest funding, stage changes and deals.
- Founded Sublime Security is founded.
- Funding First funding round of $9.8M.
- Funding Latest funding round, Series C, of $150.0M.
Web traffic of Sublime Security
The website of Sublime Security (sublime.security) receives about 52.3K visits a month and ranks #494,986 among all websites worldwide, #1,344 in Computer Security.
- Monthly visits52.3K
▼ 5.5% vs previous month
- Unique visitors21.7K
per month
- Global rank#494,986
among all websites
- Category rank#1,344
Computers Electronics and Technology · Computer Security
- Bounce rate39%
- Pages per visit3.6
- Average visit2 min 57 sec
- DevicesDesktop 52% · Mobile 48%
Websites whose visitors overlap most with Sublime Security. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| logpoint.com | 100% | 71.9K | #491,733 | View details | |
| abnormalsecurity.com | 96% | 122.2K | #244,490 | View details | |
| group-ib.com | 96% | 397.9K | #149,685 | View details | |
| google.com | 72% | 85.8B | #1 | View details | |
| linkedin.com | 71% | 1.9B | #18 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 14 similar websites and full traffic analytics for Sublime 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 Generative & Foundation AI Models
3 companies that operate in the same segment as Sublime Security (Generative & Foundation AI Models) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
OpenAI is engaged in developing advanced artificial intelligence technologies. | 2015 | San Francisco, California, United States | USD 58.07 B | 11,115 | ||
AI models and chatbots are offered for industry applications. | 2021 | San Francisco, California, United States | USD 136.81 B | 6,146 | ||
Developer of Grok, an AI assistant and model platform for reasoning, search, content creation and enterprise use. | 2023 | Burlingame, California, United States | USD 44.64 B | 1001-5000 |
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Related news about Sublime Security
Complete news archive for Sublime Security
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Frequently Asked Questions about Sublime Security
Sublime Security was founded in 2017 and raised its 1st funding round 6 years after it was founded.
Sublime Security is headquartered in Washington, United States. It is registered at Washington, District Of Columbia, United States.
Josh Kamdjou is the CEO of Sublime Security, as recorded in our data. They have also founded this company.
Sublime Security is a funded company, having raised a total of $239.8M across 4 funding rounds to date. The company's 1st funding round was a Seed of $9.8M, raised on Feb 2023.
Sublime Security has 57 employees.
Sublime Security was founded in 2017 in the cybersecurity sector. Email security operations are centered on preventing attacks via an AI-powered platform with a transparent detection engine. Control over email incidents is enabled, reducing response time. As a detection and response tool, custom rules are supported for blocking phishing, hunting threats, and addressing malware, ransomware, business email compromise, and credential phishing.
Sublime Security has 9 investors. Key investors include IVP, Citi Ventures, Index Ventures, Decibel, and Slow Ventures.