Microsoft Discovers Multi-Stage Backdoor Campaign Targeting Developers

Microsoft Discovers Multi-Stage Backdoor Campaign Targeting Developers

First seen 25 Feb 2026, 14:11 UTC •Csoonline •79% similarity •30.7

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ThreatCluster

Microsoft has identified a coordinated campaign targeting software developers through malicious repositories disguised as legitimate JavaScript projects and technical assessments. The attackers used carefully crafted lures to integrate into routine development workflows, enabling the execution of malicious code without detection.

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Timeline

2026-02-25
Microsoft issues warning about job-themed repo lures
Date unknown
Attackers deploy multi-stage backdoors via cloned repositories
Date unknown
Telemetry collected during incident investigation

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