Penetration Testing: The Complete Guide (2026)

Penetration testing is an authorized simulated attack on a system to find and prove security weaknesses before real attackers exploit them. This hub ties together everything you need — from fundamentals to tools to the AI-driven future.

Start with the fundamentals

• What Is Penetration Testing? — the beginner's guide
• The difference between a pentest and a vulnerability scan, the types (black/white/grey box), and scopes (web, network, cloud, wireless).

The five phases

Every engagement follows a lifecycle:

1. Reconnaissance — gather information
2. Scanning — map hosts and services (Nmap)
3. Gaining access — test exploitability
4. Maintaining access — assess persistence
5. Reporting — the deliverable that drives fixes

The vulnerability classes you'll test

• OWASP Top 10 is the map. Deep dives:
• SQL Injection · XSS · Broken Access Control · SSRF · API Security

The tools

• Kali Linux · Nmap · Burp Suite · Metasploit · Wireshark
• Curated lists: Best Pentest Tools · Best Vulnerability Scanners

Becoming a pentester

• How to Become a Penetration Tester
• Certifications: CEH and OSCP
• Salaries · Red vs Blue Team

How AI is changing pentesting

The biggest shift in the field:

• AI Penetration Testing
• Autonomous Penetration Testing
• AI vs Traditional Pentesting
• AI Security Agents

Stay current

New vulnerabilities drop daily — track them on the live CVE Tracker and the Cyber Security News hub.

Learn it hands-on, free

Theory is cheap; practice is everything. The free Pentevo Academy walks you through the full methodology with videos and quizzes. And when you're ready to see AI-driven testing in action, Pentevo is in beta.