Install-Time-Execution

Worms All the Way Down: Why npm and PyPI Will Keep Spawning Self-Propagating Compromises Until We Re-Architect Install-Time Trust

From the original Shai-Hulud in September 2025 through CanisterSprawl, the Bitwarden CLI compromise, and Mini Shai-Hulud, every major npm/PyPI worm of the last eight months has used the same primitive: package lifecycle hooks that run arbitrary code on install. Until the registries change that default, each generation will keep landing.