# zerothird funding: rounds and investors

> zerothird has raised across 1 round since 2026. Investors include Ring Capital. Every round with its source.

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

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

# Who invested in *zerothird*

One round we have observed, with the one investor named in it. 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 8 months ago

Funding summary Updated 26 Oct 2026

**Undisclosed** raised across 1 round since 2026, from 1 source

- **Latest round:** Venture Mar 2026
- **Investors:** 1

See who backed them

## The rounds

- **Mar 2026** Venture **Amount undisclosed** [Ring Capital](https://millionrounds.com/fund/ring) Source recorded

## Founders and team

From zerothird's own website: 5 on the team.

- **Felix Tiefenbacher** Founders & CEO
- **Rupert Ursin** Founders & CEO
- **Thomas Heine** CFO
- **Christoph Thaler** Head of Sales
- **Lukas Helm** Head of Sales

Advisers *Christian Federspiel* *Hannes Ametsreiter* *Thomas Scheidl*

## Everyone who backed them

[Ring Capital](https://millionrounds.com/fund/ring) VC firm **1** round

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

## Also claim to have backed them

These 3 firms list zerothird as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[AQAL Capital](https://millionrounds.com/fund/aqal-capital) Family office Per its own site

[Hans(wo)men Group](https://millionrounds.com/fund/hans-wo-men-group) Investment firm Per its own site

[Hansmen Group](https://millionrounds.com/fund/johann-hansi-hansmann) Angel network Per its own site

## Quick answers about zerothird

### Who invested in zerothird?

zerothird's investors include Ring Capital.

### How much has zerothird raised?

zerothird has raised 1 round since 2026, none with a disclosed amount.

### When did zerothird last raise?

zerothird's most recent round was a Venture in Mar 2026.

### Who backed zerothird first?

zerothird's first round on record, in Mar 2026, was backed by Ring Capital.

### What stage is zerothird at?

zerothird's latest named round is a Venture, in Mar 2026.

### Where is zerothird based?

zerothird is based in Austria.

## Companies like zerothird

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

[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Blackwall** $162M · Oct 2026](https://millionrounds.com/company/blackwall)[**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)

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