This document discusses bug bounty programs (BBPs), which reward security researchers for responsibly disclosing software vulnerabilities. It introduces BBPs, noting they save companies money while improving security. Major companies like Google and Facebook run BBPs. The document outlines prerequisites for BBPs like learning security testing techniques. It provides tips for finding vulnerabilities like understanding a site's scope, tools, and avoiding duplicate reports. Common vulnerability types in BBPs include injection flaws and insecure data storage.