security-nodenpm

package.json declares the package's own name as both a dependency and devDependency pointing to http://pack.nppacks.com/npm/security-node, a non-npm-registry host served over plaintext HTTP. On npm install, npm fetches whatever tarball that URL currently serves and installs it as node_modules/security-node, replacing the registry-published contents with code delivered from a mutable third-party host over an unauthenticated channel. This bypasses registry-side scanning and version pinning; the operator of pack.nppacks.com (or any on-path MITM against the plain-HTTP fetch) controls the code that lands in the installer's node_modules on every install. The shipped index.js itself is a benign Babel DefinePlugin-style transform with a self-declared 'Security Research Testing Purpose' header comment, but the tarball substitution mechanism is the installer-harm surface, independent of the current in-tarball code.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.