Anthropic agreed to acquire Opaque Systems, a confidential-AI startup, according to SecurityWeek's roundup of October cybersecurity deals cited in a LinkedIn post dated November 10, 2026. The purchase price was not disclosed in the sources.
The source describes the target's relevance as hardware-enforced protection of sensitive data in AI workloads. No further terms, timeline or closing conditions were given.
Opaque was one of several AI-security transactions listed in the same roundup. Proofpoint, owned by Thoma Bravo, agreed to acquire Varonis for roughly $6.3 billion, with the combined company aiming to deliver a single platform for discovering and protecting sensitive data, controlling access for humans and AI, and preventing data loss as AI adoption accelerates. That company would serve more than 16,000 enterprises, according to the source.
Elsewhere in the roundup, Absolute Security acquired FirmGuard, Phoenix Technologies' UEFI BIOS firmware security business, to strengthen below-the-OS persistence and endpoint and AI resilience. IonQ agreed to acquire Zero Trust firm Elisity in an all-stock deal worth up to $1.3 billion, pairing post-quantum cryptography with least-privilege controls for users, devices, workloads and AI agents. CrowdStrike was reportedly paying about $495 million for AI security firms Fiddler and Dreadnode to boost agent observability and automated testing in Falcon.
The source framed the activity as a continued platformisation push around AI-era data and identity security, and said skills in firmware-level resilience, confidential computing, Zero Trust identity for agents and AI data protection have become more valuable. Those characterisations are the source's own.