Proofpoint agrees to acquire German company Hornetsecurity, which specializes in managed cloud-based email security services, for $1B, set to close in H2 2025 (Ryan Browne/CNBC)

Ryan Browne / CNBC: Proofpoint agrees to acquire German company Hornetsecurity, which specializes in managed cloud-based email security services, for $1B, set to close in H2 2025  —  Cybersecurity firm Proofpoint is set to acquire European rival Hornetsecurity for north of $1 billion to strengthen its European presence …

May 15, 2025 - 14:16
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Proofpoint agrees to acquire German company Hornetsecurity, which specializes in managed cloud-based email security services, for $1B, set to close in H2 2025 (Ryan Browne/CNBC)

Ryan Browne / CNBC:
Proofpoint agrees to acquire German company Hornetsecurity, which specializes in managed cloud-based email security services, for $1B, set to close in H2 2025  —  Cybersecurity firm Proofpoint is set to acquire European rival Hornetsecurity for north of $1 billion to strengthen its European presence …