The npm package @futurae-public/adaptive-js version 99.9.1 contains malicious code through a dependency fetched from an off-registry HTTPS tarball URL. This dependency fetch bypasses normal npm registry protections, allowing execution of arbitrary code during installation. The package itself is an inert stub, but the off-registry dependency can execute lifecycle scripts, leading to full system compromise. Any system with this package installed should be considered fully compromised, and all secrets and keys on that system must be rotated immediately. Removal of the package does not guarantee removal of all malicious software.