North Korea-Linked npm Packages Mimic Rollup Polyfills to Steal Developer Secrets
Jul 03, 2026
Software Supply Chain / Malware
Threat actors with ties to North Korea have been linked to a fresh set of malicious npm packages that masquerade as Rollup polyfill tooling to facilitate remote access and data theft. According to JFrog, the packages "rollup-packages-polyfill-core" and "rollup-runtime-polyfill-core" mimic the legitimate " rollup-plugin-polyfill-node " project, down to the description, repository metadata, and package shape. "The lookalike packages place themselves in the same rollup, polyfill, core, and node naming space, which can look plausible during a quick dependency review," JFrog said in a technical write-up of the campaign. The campaign also involves four other packages, all of which have since been removed from the npm registry - quirky-token react-icon-svgs rollup-plugin-polyfill-connect swift-parse-stream What's noteworthy here is that "rollup-packages-polyfill-core" installs and loads "swift-parse-stream,...