Four Nation-State Actors Used the Same Chrome Zero-Day Exploit Kit Within 12 Days
Four espionage groups used the BlueMoon Chrome+Windows exploit kit within 12 days. Researchers suspect AI development. Proofpoint published a detailed analysis of a Chrome-and-Windows exploit kit it tracks as BlueMoon that four nation-state actors adopted within roughly two weeks of the first observed use. Google’s Threat Intelligence Group, Microsoft’s MSTIC, and Volexity all contributed to […]
Pierluigi Paganini
September 10, 2026

Proofpoint published a detailed analysis of a Chrome-and-Windows exploit kit it tracks as BlueMoon that four nation-state actors adopted within roughly two weeks of the first observed use. Google’s Threat Intelligence Group, Microsoft’s MSTIC, and Volexity all contributed to the investigation.
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