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128 Seconds to disruption: Microsoft Defender stops ransomware at QNET

Published

4 August 2026

Topic

technology

Sectors

CybersecuritySecurity Infrastructure

Geography

United States

Source

Read at microsoft.com

Verified

Fusion42 · 4 August 2026 · Fusion42 review

Microsoft Defender introduced autonomous device isolation to stop ransomware by cutting off compromised endpoints within 128 seconds, preventing credential theft, lateral movement, and payload persistence as demonstrated in a real attack at QNET.

This Wire brief sits within Fusion42's coverage of Cybersecurity and Security Infrastructure.

◆ The Wire takeaway

You lose the time pressure to manually contain attacks once Defender isolates devices autonomously. Focus on building response playbooks that integrate rapid endpoint isolation to shorten incident disruption.

Coverage

1 source · 4 Aug 2026

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Topics

CybersecuritySecurity Infrastructuremicrosoft-defenderdevice-isolationransomwareendpoint-securitysecurity-automation