GEE Group Acquires Hornet Staffing

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.

BGSF, Inc. Acquires Horn Solutions, Inc.

December 12, 2022

Staffing & HR

BGSF, Inc. (NYSE: BGSF), a national provider of consulting, managed services and workforce solutions, acquired Texas-based Horn Solutions, Inc., a workforce solutions firm focused on finance, accounting and IT staffing. The acquisition adds Horn’s teams and capabilities across Houston, Dallas and Austin to BGSF’s consulting and managed services platforms, enabling cross-selling and expanded IT managed services.

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.

Centroid Systems Acquires Guardian Eagle

June 14, 2022

Cybersecurity

Centroid Systems, LLC has completed the acquisition of Guardian Eagle, a St. Petersburg, Florida-based database security consulting firm. The deal expands Centroid's data security capabilities and expert resources to strengthen its end-to-end cloud transformation, consulting and managed services and to extend its presence in the U.S. Southeast.

Hornetsecurity Group Acquires Altaro

January 12, 2021

Cloud & SaaS

Hornetsecurity Group, a Germany-based cloud email security provider backed by PSG and Verdane, has agreed to acquire Altaro, a Malta-headquartered developer of backup solutions for Microsoft 365 and virtual machines. The deal expands Hornetsecurity's product suite and international footprint by adding Altaro's Office 365 and VM backup capabilities to create a broader cloud security and compliance 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.