Shai-Hulud Malware Compromises Over 600 npm Packages

Over 600 npm packages experienced compromise by “Shai-Hulud,” a malware attack targeting developer credentials and wallet keys. Key projects, such as Zapier, ENS Domains, and Postman, were impacted, risking data theft and unauthorized financial access.

A malware attack known as Shai-Hulud has compromised over 600 npm packages, targeting developer credentials and wallet keys since November 21, 2025.

The Attack’s Impact

The malware attack, called Shai-Hulud, has breached more than 600 npm packages, affecting high-profile projects such as Zapier and AsyncAPI. Early detection by Aikido Security’s Charlie Eriksen revealed the exposure of credentials and secrets to GitHub.

Important players such as ENS Domains and Postman were also impacted, with Wiz Research Team documenting a propagation timeline. Attacks originated from compromised npm maintainer accounts, leveraging phishing but with unidentified authors.

Cloud services like AWS and crypto assets including ETH and BTC face risks of theft due to compromised credentials. Despite no confirmed protocol-level hacks, the attack impacts developer environments and cloud infrastructure significantly.

Financial and crypto markets face indirect threats with exposed secrets potentially leading to wallet drains. Severe impacts on developer infrastructure highlight the need for enhanced security measures.

Observations from previous attacks indicate self-replicating malware tactics, similar to historical npm phishing campaigns. Indirect exposure of private repositories could elevate risks of operational and financial disruption.

The Shai-Hulud malware creates significant challenges requiring immediate password rotations and security updates. Monitoring and evaluative controls are essential to prevent further damage in future supply chain occurrences.