Socket

Socket is a supply chain security platform that scans open-source dependencies for signs of malicious behavior, such as unexpected network calls, filesystem access, or obfuscated code, before a vulnerable or compromised package makes it into a production application. Traditional vulnerability scanners typically check dependencies against a database of already-known and disclosed vulnerabilities, but Socket's approach analyzes the actual behavior and code changes of a package, which lets it catch newly introduced malicious code or suspicious maintainer behavior even before a formal vulnerability has been published. It integrates directly into GitHub pull requests, flagging risky dependency changes with a detailed risk report before code is merged, so engineering teams catch a problem at review time instead of discovering it after a compromised package is already running in production. Socket covers ecosystems like npm and PyPI, which are frequent targets for supply chain attacks given how deeply nested dependency trees can hide malicious packages many layers deep from a project's direct dependencies. Its dashboard gives security and engineering teams visibility into the overall risk posture of everything their applications depend on, not just their own first-party code. Socket is aimed at engineering and security teams that have realized traditional static vulnerability scanning isn't sufficient protection against the growing volume of supply chain attacks targeting open-source package registries.