The npm package 'transform-strict-mode' version 10.0.0 contains malicious code that installs a dependency from a custom domain which executes an information stealer during installation. This malware targets sensitive tokens related to npm, git, and CI/CD environments. Systems with this package installed should be considered fully compromised, and all secrets and keys must be rotated immediately from a secure machine. Removing the package alone does not guarantee removal of all malicious components.