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Proofpoint acquires Acuvity to tackle the security risks of agentic AI

ID: 4bdbff58-6313-537b-b4a9-b13e17452429

STIX ID: report--4bdbff58-6313-537b-b4a9-b13e17452429

Feed Name: Proofpoint Blog

Date Published: 2026-02-12

Date Updated: 2026-04-28

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Proofpoint acquired AI security startup Acuvity to strengthen governance and visibility over agentic AI usage across enterprises, addressing risks such as prompt injection and model manipulation as AI adoption accelerates. The deal brings Acuvity’s engineering team to Proofpoint, aligns with its Hornetsecurity portfolio for SMBs, and reflects a broader trend of larger security vendors buying AI-focused startups, exemplified by Varonis’s purchase of AllTrue.ai.

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