Socket.dev is a cybersecurity platform focused on protecting software supply chains, particularly in ecosystems that rely heavily on open-source dependencies such as JavaScript (npm), Python (PyPI), and Go. Instead of relying only on known vulnerability databases (like CVEs), Socket analyzes the actual behavior of packages to detect suspicious or potentially malicious activity.

The platform is designed to prevent supply chain attacks by inspecting dependency changes in real time. It integrates directly into developer workflows such as GitHub pull requests and CI pipelines, where it can flag risky package updates before they are merged or deployed. This proactive approach helps teams identify threats like typosquatting packages, compromised maintainer accounts, obfuscated code, or unexpected network and filesystem access.

Socket.dev differs from traditional vulnerability scanners by focusing on behavioral analysis rather than only known issues. It evaluates how packages behave during installation and runtime, looking for indicators of malicious intent that may not yet be recorded in public vulnerability databases.

It is widely used by engineering and security teams in organizations that depend heavily on open-source software and want to reduce the risk of supply chain compromise.

Key features include:

• Behavioral analysis of open-source dependencies
• Detection of malicious or suspicious package activity
• Real-time scanning in GitHub pull requests and CI pipelines
• Support for npm, PyPI, and Go ecosystems
• Risk scoring and security insights for dependencies

Common use cases include:

• Securing software supply chains
• Reviewing dependency updates
• Preventing malicious package installs
• Enforcing security policies in CI/CD pipelines
• Improving open-source risk management for engineering teams

Socket.dev was founded by Feross Aboukhadijeh and is an independent cybersecurity company focused on proactive supply chain protection for modern software development.