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Microsoft Discovers Multi-Stage Backdoor Campaign Targeting Developers

Microsoft Discovers Multi-Stage Backdoor Campaign Targeting Developers

First seen 25 Feb 2026, 14:11 UTC

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ThreatCluster AI
ThreatCluster March 12, 2026 at 16:10 UTC

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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Updated 182d ago How this analysis works

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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