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Microsoft Copilot, MLflow, and Windows Task Host under attack; ransomware exploitation confirmed

ID: 5a1a5475-95a9-5ef3-a243-b263ffe3d35d

STIX ID: report--5a1a5475-95a9-5ef3-a243-b263ffe3d35d

Feed Name: defend.network

Threat Score
78/100

Date Published: 2026-08-19

Date Updated: 2026-08-19

Author: defend.network

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**Executive Summary:** This briefing outlines multiple high-risk active threats: one-click data exfiltration flaws in Microsoft Copilot Personal, active exploitation of MLflow and FUXA for credential theft, confirmed ransomware exploitation of a Windows Task Host vulnerability, the TWINLOOT Python implant abusing SharePoint/Teams for lateral movement and credential harvesting, and Clop-linked custom web shells targeting PTC Windchill/FlexPLM; immediate patching, isolation of affected services, and focused detection hunts are recommended.

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