Penetration Tester / Ethical Hacker

1. 1
   Build Security Fundamentals — Networking and OS

   Penetration testing requires deep understanding of what you're attacking: TCP/IP networking (how packets flow, how protocols work, where they can be exploited), Linux administration (pen testers primarily work from Kali Linux), Windows internals (Active Directory, NTLM authentication, PowerShell — most enterprise targets are Windows), and web application fundamentals (HTTP, cookies, sessions, APIs). CompTIA Security+ ($392) is the foundational credential. TryHackMe and Hack The Box provide interactive labs for hands-on learning.

   CompTIA Sec+ + TryHackMe beginner path
2. 2
   Learn the Penetration Testing Methodology

   Professional pen testing follows a structured methodology: reconnaissance (gathering information about the target), scanning (identifying open ports, services, and vulnerabilities), exploitation (gaining access through identified vulnerabilities), post-exploitation (what can be done with access — privilege escalation, lateral movement, data exfiltration simulation), and reporting (documenting findings clearly enough for both technical and executive audiences). The Penetration Testing Execution Standard (PTES) and OWASP Testing Guide define the professional frameworks.

   PTES methodology + OWASP Testing Guide
3. 3
   Complete the OSCP Training Path

   OSCP (Offensive Security Certified Professional) is the gold-standard hands-on penetration testing certification. The PEN-200 course (included with the exam, $1,499) provides 90 days of lab access with 75+ vulnerable machines to compromise. The 24-hour practical exam requires compromising a set of machines and submitting a professional penetration testing report within 24 hours. OSCP validates: practical exploitation skill, lateral movement, post-exploitation, and professional report writing. It is specifically required or strongly preferred at most penetration testing firms.

   OSCP — Offensive Security (PEN-200 course)
4. 4
   Practice Continuously on CTF Platforms

   CTF (Capture The Flag) competitions and practice platforms are how pen testers develop and maintain technical skills. Hack The Box (HTB) is the premier practice platform — new machines released weekly, tiered difficulty, active community. Platforms: TryHackMe (beginner-friendly, guided), Hack The Box (intermediate-advanced, more realistic), VulnHub (downloadable VMs for offline practice). Active Hack The Box participation is a significant positive signal in pen tester hiring — it demonstrates ongoing skill development.

   Hack The Box active participation + CTF competitions
5. 5
   Develop Specialization and Build Report Writing

   After OSCP, specializations that command premium rates: web application penetration testing (BSCP — Burp Suite Certified Practitioner, or GWAPT — GIAC Web Application Penetration Tester), red team operations (CRTO — Certified Red Team Operator from Zero-Point Security), Active Directory attacks (CRTP — Certified Red Team Professional), or cloud penetration testing. Report writing quality is the differentiator between average and excellent pen testers — technical findings must be communicated clearly to non-technical executives.

   BSCP web app testing or CRTO red team specialty

• 9:00 AMEngagement kickoff — new client: a regional bank. Scope: external network penetration test and web application test of their customer portal. Review the Rules of Engagement: authorized IP ranges, excluded systems (production core banking is out of scope), emergency contact numbers, and authorized testing window (business hours only). Sign off on scope document.
• 9:30 AMReconnaissance — passive information gathering on the target. Shodan for exposed services, LinkedIn for employee names and job titles (useful for password guessing), DNS enumeration (subfinder, amass) to find subdomains. Discover: customer portal at app.clientbank.com, API subdomain at api.clientbank.com, and an old staging environment at staging.clientbank.com (not in the client's scope list — flag for clarification).
• 11:00 AMExternal scanning — Nmap scan of the authorized IP ranges. Discover: 4 externally accessible services including an older Apache version with known CVEs. Run Nessus for vulnerability scan. 2 HIGH findings: the Apache version and an exposed administrative interface on port 8443.
• 12:00 PMLunch — 30 minutes.
• 1:00 PMWeb application testing — begin testing the customer portal with Burp Suite. Check for authentication weaknesses (username enumeration through login error messages — confirmed), session management issues (cookie lacks Secure and HttpOnly flags), and input validation (test for SQL injection in the search parameter — confirmed partial SQL injection, extracting database error messages).
• 3:30 PMExploitation — exploit the SQL injection to extract the database schema and confirm the scope of accessible data. Document the attack path with screenshots and command output. This is a critical finding — stops short of data extraction per engagement rules.
• 5:00 PMFinding documentation — write up today's findings in the report template: vulnerability description, severity rating (CVSS score), business impact, proof of concept (redacted screenshots), and remediation recommendation. Professional report writing is what justifies the engagement fee.

Penetration testers think creatively like attackers — combining technical depth with adversarial imagination to find vulnerabilities that automated scanners miss. AI scanning tools are a component of the tester's toolkit, not a replacement. The +33% growth reflects genuine demand expansion.