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Ledger CTO Issues Urgent Warning: Massive NPM Supply Chain Attack Threatens Crypto Users

Dario avatar
Shared by Dario • September 09, 2025

Ledger's Chief Technology Officer, Charles Guillemet, has issued a critical warning to cryptocurrency users, advising them to temporarily halt on-chain transactions due to a large-scale supply chain attack targeting the NPM ecosystem. The attack involves a compromised NPM account of a reputable developer, with affected packages downloaded over a billion times, potentially putting the entire JavaScript ecosystem at risk.