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CyberScoop
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Microsoft, Attacks

Storm-0940 used the agentic AI penetration testing framework to automate attacks and “reach more than 2,250 tenants at 2,900 sign-in attempts per minute,” Microsoft researchers said.

Practical steps for any organisation

  • Patch quickly, starting with anything facing the internet.
  • Use multi-factor authentication everywhere it is offered.
  • Keep tested, offline backups – and a plan for the day you need them.

Defender’s notebook

The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.

© 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.

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