Nebulock Raises $25 Million for AI-Native Contextual Security

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Cybersecurity startup Nebulock has announced raising $25 million in a Series A funding round that brings the total raised by the company to over $33 million.

The new investment round was led by FirstMark, with additional support from previous backers Bain Capital Ventures, Decibel, Step Function, and Zetta Venture Partners.

Boston, Massachusetts-based Nebulock emerged from stealth mode a year ago, focused on autonomous, vendor-agnostic threat hunting across endpoint, cloud, and identity.

Since then, the startup has expanded its AI-powered solution to deliver proactive detection engineering and behavioral security analytics.

[ Read:Agentic AI Security: Wrong Context, Wrong Decisions at Machine Speed]

To help defenders understand behavior, the platform hunts for and correlates human and AI accounts, identities, and hosts, delivering detection rules to test, edit, and fine-tune.

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Nebulock turns enterprise context into a behavioral system of record, providing visibility into activities across endpoint, identity,...

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