Hornetsecurity
Hornetsecurity is a cybersecurity company specializing in Email & Messaging Security, founded in 2007 and headquartered in Hanover, Germany. It has 9 priced equity rounds on record with undisclosed amounts, employs about 573 people, and was acquired by Proofpoint in 2025.
updated Oct 11, 2026
Latest Hornetsecurity news and company activity
What Hornetsecurity did, dated — selected moves from the record, one per kind, newest first.
- Dec 2025AcquiredProofpoint Acquires Hornetsecurity in $1.8 Billion Deal to Strengthen SMB Cybersecurity
- Nov 2025Feature launchHornetsecurity boosts Microsoft 365 security against compromised accounts with new Teams Protection functionality
- May 2025AcquiredHornetsecurity - TA Associates
18 events tracked since Jan 2022 · selected events shownUnlock the complete Hornetsecurity timeline
Hornetsecurity funding
Hornetsecurity has 9 priced equity rounds on record with undisclosed amounts. Its most recent round was a Private Equity in September 2022.
- Equity raised
- Undisclosed9 priced rounds
- Last round
- Private EquitySep 2022
Hornetsecurity employees and hiring
Hornetsecurity has about 573 employees, up 2% over the last 30 days, with 81 open roles.
- Employees
- 573
- 30-day change
- +2%
- Open roles
- 81
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The other 440 data points.
- Funding historyevery round, every investor named
- Headcount growthvelocity, departments, seniority
- Open jobs81 live postings, role mix
- Tech stackframeworks, clouds, security
