The npm package 'focaleys' version 1.1.0 declares a dependency on 'libsignal' via a GitHub repository reference without specifying a fixed tag, version, or commit SHA. This means that on installation, the dependency resolves to the current default branch HEAD of the repository, executing any lifecycle scripts present there on the installer's machine. Control of the GitHub account 'rexxzyid' thus allows an attacker to run arbitrary code during installation of 'focaleys', potentially changing silently between installs without modifying the 'focaleys' package itself.