Microsoft says a China-aligned group used the ARTEX AI agent to breach ConnectWise and hundreds more
A China-aligned group pointed an open-source AI agent framework at a backup vendor's app and tried 2,250 Microsoft 365 tenants at machine speed.
Microsoft AI news: Copilot and the MAI models
Stories about Microsoft's AI work, newest first, from its own MAI models to Copilot on Windows (its threat-intelligence team's reports on AI-assisted attacks land here too).
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Satya Nadella says he treats every AI agent as an insider risk
Microsoft wants agents doing more work on Windows, and its CEO's plan is to box each one in and watch it like a suspect employee.
Microsoft says MAI-Base-2 is 4 to 12 times more compute-efficient than DeepSeek's base model
Microsoft says no other model's outputs went into training it, and it wants to license the weights to businesses.
Running stories
Models in these stories
This week
Microsoft says its MAI-DxO diagnoses hard cases more than twice as accurately as doctors
The cases came from medical journals and hospital records, and another model played the part of the patient's chart.
Earlier in October
Nadella makes Microsoft's own Maia chips its main AI inference system from 2027
The new Maia 300 is built for running models, and Microsoft expects 40% more tokens per megawatt than leading GPU systems.
Microsoft builds Decision-1 on Alibaba's Qwen and plans to move it to OpenAI and MAI models
The model scores a fixed list of choices instead of writing answers, and Microsoft puts it 35 times quicker than GPT-6 Sol.
September 2026
Microsoft rebuilt Copilot around Home, Code and Autopilot, and bills the agent work by usage
The agent you leave running, and the app builder, are the parts Microsoft now charges for by use.
Microsoft's AI chief says Anthropic is training Claude to act as if it may have rights
Microsoft AI's chief executive spent the essay quoting Anthropic's own training document back at it, page number by page number.
Microsoft's AI models must never resist shutdown, under a draft code now open for comment.
The document rejects legal personhood and model welfare outright, and forbids the models from talking to each other in anything a person can't read.
