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Proofpoint Completes $1.8 Billion Acquisition of Hornetsecurity 

Posted on December 9, 2025December 9, 2025 By CWS

Enterprise cybersecurity large Proofpoint has accomplished the acquisition of Germany-based Microsoft 365 safety options supplier Hornetsecurity.

Monetary particulars weren’t formally disclosed when information of the transaction got here to mild, but it surely was reported that Proofpoint can be paying $1 billion for its European competitor. SecurityWeek realized on the time that the deal measurement effectively exceeds $1 billion.

Proofpoint has now revealed that the transaction has been valued at $1.8 billion. 

By the acquisition of Hornetsecurity, Proofpoint is aggressively increasing its attain into the SMB market and strengthening its foothold in Europe.

Hornetsecurity will function as a devoted enterprise unit centered on MSPs. The corporate serves greater than 12,000 MSPs and 125,000 prospects.

Hornetsecurity founder and CEO Daniel Hofmann will lead this new unit as Govt Vice President and Normal Supervisor.

When it comes to funds, Proofpoint mentioned Hornetsecurity brings in practically $200 million in annual recurring income, with a 20% year-over-year development charge.

“[Hornetsecurity’s] flagship software program platform, 365 Complete Safety, is a complete, cloud-native resolution that offers MSPs a clear, built-in strategy to safe Microsoft 365 environments,” mentioned Sumit Dhawan, CEO of Proofpoint. Commercial. Scroll to proceed studying.

“It enhances Proofpoint’s enterprise-grade resolution, and collectively we are able to now defend individuals, information, and AI brokers for each buyer, throughout enterprises and small companies,” Dhawan added.

SecurityWeek’s cybersecurity M&A tracker has cataloged roughly 400 offers to this point in 2025. An evaluation of this 12 months’s mergers and acquisitions shall be printed in early 2026. 

Associated: Cybersecurity M&A Roundup: 30 Offers Introduced in November 2025

Associated: Palo Alto Networks to Purchase Observability Platform Chronosphere in $3.35 Billion Deal

Associated: DOJ Antitrust Overview Clears Google’s $32 Billion Acquisition of Wiz

Security Week News Tags:Acquisition, Billion, Completes, Hornetsecurity, Proofpoint

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