Ledger CTO Warns After NPM Attack Exposes Weaknesses in Software Wallets

A recent supply-chain exploit targeting Node Package Manager (NPM) libraries has reignited debate over the safety of software-based crypto storage. Though the attack netted just $50, industry experts say the incident highlights how quickly vulnerabilities can escalate into systemic risks.

Charles Guillemet, chief technology officer at hardware wallet maker Ledger, cautioned in an X post on Tuesday that the episode should not be dismissed. “If your funds sit in a software wallet or on an exchange, you’re one code execution away from losing everything,” he said, stressing that the immediate danger may have passed but the threat persists. Guillemet argued that hardware wallets, with features like clear signing and transaction verification, provide crucial safeguards against such exploits.

The breach began when attackers obtained developer credentials via a phishing campaign masquerading as NPM support. Once inside, they injected malicious code into widely used libraries such as chalk, debug, and strip-ansi. The modified packages functioned as crypto clippers, quietly replacing wallet addresses during transactions across multiple blockchains, including Bitcoin, Ethereum, Solana, Tron, and Litecoin.

Anatoly Makosov, CTO of The Open Network (TON), explained that only specific versions of 18 packages were compromised. Rollbacks have since been issued, but apps that auto-updated their dependencies during the attack window were particularly at risk.

Developers were urged to audit their projects immediately. Signs of compromise include reliance on the affected versions of libraries such as ansi-styles and chalk. The recommended response is to revert to safe versions, reinstall clean code, and rebuild applications.

While losses this time were minimal, the incident is being seen as a stark warning: supply-chain compromises remain one of the most powerful delivery mechanisms for malware in the crypto ecosystem.