eslint-plugin-security is an ESLint plugin that identifies potential security vulnerabilities in JavaScript and TypeScript code. It analyzes code for unsafe practices like regular expressions vulnerable to ReDoS attacks, disabling TLS verification, and the use of dangerous functions. By integrating this plugin into your ESLint configuration, you can proactively detect and address security issues during development, improving the overall security posture of your npm packages and applications. The plugin helps developers write more secure code by highlighting potential risks early in the development lifecycle.