Second Sha1 Hulud Wave Impacts More Than 25,000 Repositories Through npm Preinstall Credential Theft
A new supply chain attack has been identified across the npm ecosystem, marking a second wave of activity similar to the earlier Shai Hulud incident. Security companies report that thousands of repositories and hundreds of npm packages were compromised between November 21 and 23, 2025. The latest campaign has been named Sha1 Hulud and involves […]









