StepSecurity is reporting the emergence of a new worm affecting NPM packages. The design of the worm is nothing new, but the rapidity with which it is exploiting captured NPM packager credentials is noteworthy. TL;DR: A self-propagating worm, which we are calling ChainDrop, is spreading rapidly through the npm ecosystem. So far 435 packages and more than 1,550 compromised versions have been flagged, starting with keyv@6.0.0. If you are using any of the packages listed below, assume your environment is compromised. We are still investigating the full scope; check back on this post for updates.