# Hornetsecurity

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/hornetsecurity

- Industry: IT Security/Cybersecurity
- Headquarters: Hannover, Germany
- Website: www.hornetsecurity.com
- Latest round: Series A (Dec 6, 2007)
- Investors on record: 3

## About

Based in Germany, Hornetsecurity GmbH, f.k.a. Antispameurope GmbH operates as a developer of cloud security solutions and services for software management, IT infrastructure, and data and email protection in various organizations.
Based in Hannover, Germany, and founded in 2007 by CEO Daniel Hofmann, and CFO Oliver Dehning, Hornetsecurity GmbH, f.k.a. Antispameurope GmbH operates as an IT (information technology) security company that provides a SaaS (software as a service) solutions to offers security, compliance, and backup solution for Microsoft 365 to safeguard emails, documents, and files. In May 2025, Proofpoint, Inc., a portfolio company of Thoma Bravo and Alberta Teachers' Retirement Fund, agreed to acquire Hornetsecurity GmbH from TA Associates, PSG Equity and Verdane Capital Advisors for approximately USD 1 billion. The transaction valued the company at USD 1.8 billion.
The company offers 365 total protection, 365 total protection enterprise backup, and hornet.email, against phishing, ransomware, advanced threats, and data loss. Additionally, Hornetsecurity provides seamless integration, simple management, and other features to improve cloud-based corporate email mailboxes. 
The company generates revenue from the subscription of its 365 total Protection packages, which include business (USD 2 per Microsoft 365 license), enterprise (USD 4 per Microsoft 365 license and USD 1.00 for the addition of hornet.email), and enterprise backup (USD 6 per Microsoft 365 license).

## Funding rounds

- Series A, Dec 6, 2007 — Neuhaus Partners, High-Tech Gruenderfonds, Hannover innovations fonds

## Investors

- Neuhaus Partners (https://capitalatlas.ai/funds/neuhaus-partners) — Series A
- High-Tech Gruenderfonds (https://capitalatlas.ai/funds/high-tech-gruenderfonds) — Series A
- Hannover innovations fonds — Series A