Proofpoint Acquires ObserveIT

Proofpoint Acquires Acuvity

February 12, 2026

Cybersecurity

Proofpoint, Inc. has acquired Acuvity, an AI security and governance platform provider, to enhance its capabilities for securing AI agents, copilots, and model-connected applications across the enterprise. The acquisition adds AI-native visibility, governance and runtime protection to Proofpoint’s human- and agent-centric cybersecurity platform, enabling broader protection of people, data and AI-driven workflows.

Proofpoint Acquires InteliSecure for $62.5M

February 22, 2021

Cybersecurity

Proofpoint, Inc. agreed to acquire InteliSecure, a data-loss-protection managed services provider, for $62.5 million in cash. The acquisition (expected to close in Q1 2021) adds roughly 150 employees and strengthens Proofpoint’s people-centric cloud-based DLP and managed security services; InteliSecure was sold by investor Frontier Growth.

Proofpoint Acquires Dathena

January 10, 2022

Cybersecurity

Proofpoint has completed the acquisition of Dathena, an AI-powered data discovery and classification specialist, to enhance its Information & Cloud Security and people-centric DLP offerings. The deal integrates Dathena's AI-driven data classification capabilities into Proofpoint's cloud platform, expanding its data protection capabilities and strengthening its presence in Asia.

LogicMonitor Acquires Catchpoint

December 2, 2025

Cloud & SaaS

LogicMonitor has completed the acquisition of Catchpoint to create an AI‑powered, end‑to‑end observability platform that combines deep infrastructure telemetry with Internet‑level visibility. Pulse 2.0 reported the deal is valued at over $250 million; Cantor Fitzgerald advised Catchpoint while Jefferies LLC and William Blair advised LogicMonitor.

Proofpoint Acquires Tessian

December 19, 2023

Cybersecurity

Proofpoint, Inc. has completed the acquisition of Tessian, a provider of AI-powered behavioral email security and data loss prevention. The deal integrates Tessian's machine-learning detection for misdirected emails and data exfiltration into Proofpoint's threat and information protection platform to expand its AI-driven defenses across email, cloud, and endpoints.

ITRS Group Acquires Opsview Limited

July 30, 2021

Software

ITRS Group has acquired 100% of Opsview Limited, a scalable IT monitoring and observability platform. The deal expands ITRS's monitoring and analytics portfolio, enabling capability and product expansion while Opsview will continue to operate as a separate brand.