What Is Penetration Testing: Tools, Process, and Importance

The document is a comprehensive primer on penetration testing, explaining what it is, why it matters, the main testing types (network, web, mobile, cloud, and social engineering), the typical methodology (information gathering through post-exploitation and reporting), and the tools used across each phase (e.g., Nmap, Nessus, Burp Suite, Metasploit, Mimikatz). It contrasts penetration testing with vulnerability assessments, highlights the move toward continuous testing within DevSecOps, and briefly cites a recent CVE in n8n as an example of how testing uncovers systemic risks.