Hornetsecurity Group Acquires Altaro

Proofpoint Acquires Hornetsecurity Group

May 15, 2025

Cybersecurity

Proofpoint, Inc. has entered into a definitive agreement to acquire Hornetsecurity Group, a Hanover-based provider of AI-powered Microsoft 365 security, data protection, compliance, and security awareness solutions. The acquisition (expected to close in H2 2025) expands Proofpoint's reach into the MSP channel and SMB market and brings Hornetsecurity's ~$160–200M ARR business and large MSP partner ecosystem into Proofpoint's platform.

Hornetsecurity Acquires Zerospam

March 25, 2021

Cybersecurity

Hornetsecurity Group has acquired Zerospam, a Montreal-based cloud email protection specialist, to accelerate its North American expansion and broaden its email security and compliance offerings. The transaction is supported by Hornetsecurity shareholders PSG and Verdane; financial terms were not disclosed.

Hornetsecurity Acquires British Email Security Partner EveryCloud

January 14, 2020

Cybersecurity

Germany-based email security provider Hornetsecurity has acquired British distribution partner and email security firm EveryCloud. The acquisition expands Hornetsecurity's European footprint and strengthens its presence in the U.K. and North American markets while bringing EveryCloud's ~9,000 customers and reseller network into Hornetsecurity's product and service ecosystem.

TA Associates, PSG and Verdane Invest in Hornetsecurity

September 6, 2022

Cybersecurity

Hornetsecurity, a Hanover-based cloud security and compliance SaaS provider, has received a strategic growth investment from TA Associates, joining existing investors PSG Equity and Verdane in a co-control partnership with management. The capital will support product build-out, international expansion and continued M&A as Hornetsecurity scales its email security, backup and compliance offerings.

Arrow Business Communications Acquires Altinet Ltd

July 1, 2020

Cybersecurity

MML-backed Arrow Business Communications Limited has acquired Altinet Ltd, a Leeds-based provider of cyber security managed services. The add-on strengthens Arrow's cybersecurity capability following MML's January 2020 investment; the deal was supported by CVC Credit Partners and advised by Kemp Little and RSM.

Symantec Corporation Acquires Altiris Inc. for $830M

January 29, 2017

Software

Symantec Corporation agreed to acquire Altiris Inc. for approximately $830 million in cash ($33 per share) to expand its presence in the corporate software market. The deal, announced by Symantec, is expected to close in the second quarter pending regulatory and shareholder approvals and is intended to strengthen Symantec's enterprise management and IT asset-management capabilities.