# DefensX funding: rounds and investors

> DefensX has raised $15M across 2 rounds since 2025. Investors include Revo Capital and Türkiye Development Fund. Every round with its source.

Source: https://millionrounds.com/company/defensx (Millionrounds; every figure on the page links to its filing or article)

United States · [Venture startup](https://millionrounds.com/companies)

# Who invested in *DefensX*

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Cybersecurity

Raised 4 months ago

Funding summary Updated 26 Oct 2026

**$15M** raised across 2 rounds since 2025, from 2 sources

**$2.3M** Seed **$13M** Venture

- **Latest round:** Venture, $13M Jul 2026
- **Step-up i:** 5.5×
- **Investors:** 2

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2026

**$2.3M** Seed

**$13M** Venture

- **First round:** Seed, $2.3M
- **Biggest round:** $13M
- **Between rounds:** 14 months

## The rounds

- **Jul 2026** Venture **$13M** *2 returning* [Revo Capital](https://millionrounds.com/fund/revo-capital) [Türkiye Development Fund](https://millionrounds.com/fund/turkiye-development-fund) Source recorded
- **May 2025** Seed **$2.3M** *2 new* [Revo Capital](https://millionrounds.com/fund/revo-capital) [Türkiye Development Fund](https://millionrounds.com/fund/turkiye-development-fund) Source recorded

## Founders and team

From DefensX's own website: 2 founders, 6 on the team.

**Halis Osman Erkan** Founder & CEO

**Murat Demirten** Founder & CTO

- **Andrew Morton** Vice President - Sales
- **Alex Russo** Board Member
- **Alper Akçan** Board Member
- **Cenk Bayrakdar** Board Member
- **Dave Maik** Channel Director
- **Nick Stoffregen** Board Member

Advisers *David A. Walsh* *Martina Aufiero*

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Seed** 2025 **Venture** 2026 [Revo Capital](https://millionrounds.com/fund/revo-capital) [Türkiye Development Fund](https://millionrounds.com/fund/turkiye-development-fund)

## Everyone who backed them

[Revo Capital](https://millionrounds.com/fund/revo-capital) VC firm **2** rounds

[Türkiye Development Fund](https://millionrounds.com/fund/turkiye-development-fund) VC firm **2** rounds

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=defensx).

## Quick answers about DefensX

### Who invested in DefensX?

DefensX's investors include Revo Capital and Türkiye Development Fund.

### How much has DefensX raised?

DefensX has raised $15M across 2 rounds since 2025.

### When did DefensX last raise?

DefensX's most recent round was a Venture of $13M in Jul 2026.

### What was DefensX's biggest round?

Its most recent round, $13M in Jul 2026, is also its largest on record.

### Who backed DefensX first?

DefensX's first round on record, in May 2025, was backed by Revo Capital and Türkiye Development Fund.

### What stage is DefensX at?

DefensX's latest named round is a Venture, in Jul 2026.

### Where is DefensX based?

DefensX is based in the United States.

## Companies like DefensX

In the same sector, and raised in the last eighteen months.

[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Opsin** $21M · Oct 2026](https://millionrounds.com/company/opsin)[**Harmonic Security** $68M · Oct 2026](https://millionrounds.com/company/harmonic-security)[**Reach Security** $60M · Oct 2026](https://millionrounds.com/company/reach-security)[**Persona** $210M · Oct 2026](https://millionrounds.com/company/persona)[**Hilt** $4.7M · Oct 2026](https://millionrounds.com/company/hilt)

## Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.

Open the investor searchOr these rounds in the app