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Harvey raises $550M at $15.5B, ships in-house model and buys Guardrails AI

Legal AI startup Harvey raised $550M at a $15.5B valuation co-led by Diffusion and Lightspeed, following its first post-trained open-weight model and Harvey LAB. The same day it acquired Guardrails AI, an agent-security and simulation platform—its fourth acquisition of 2026.

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Darktrace MCP Server now generally available

Announced Nov 13, the server lets AI assistants query security alerts, pull Cyber AI Analyst findings, and run triage actions across licensed Darktrace products. A read only mode hides tools that change data…

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