A penetration test of a new banking app
Imagine a Hyderabad fintech team about to release a mobile banking app. Before customers put money into it, the company hires a penetration tester. The tester reads the agreed scope, maps the servers and APIs, tries to bypass the login, attempts SQL injection on a search box and checks whether a stolen session cookie can be reused.
When the work is done, the tester does not just say "we got in". They write a report: what was found, how serious it is, how to reproduce it, and how to fix it. That report, more than the hacking itself, is what the client pays for.
Penetration testing compared with a vulnerability scan
A vulnerability scan is largely automated: a tool such as OpenVAS or Nessus lists known weaknesses. Penetration testing goes further. A human chooses targets, chains weaknesses together, tries to exploit them and judges the real business impact. In industry this work often appears under the label VAPT, meaning vulnerability assessment and penetration testing.
Because it requires judgement, methodology and clear communication, penetration testing is one of the most sought-after offensive security skills, and it is the core deliverable behind most red-team engagements too.
Types of penetration testing to learn
Different targets need different techniques. A well-rounded junior pentester should be familiar with each of these.
- Network penetration testing: scanning, enumeration and exploiting misconfigured services on internal and external networks
- Web application testing: SQL injection, cross-site scripting and the full OWASP Top 10, using Burp Suite, OWASP ZAP and SQLmap
- Wireless testing: assessing WiFi encryption and attack techniques with tools such as Aircrack-ng
- Active Directory testing: following common attack paths inside a Windows domain
- Mobile application testing: reviewing Android apps for security weaknesses
- IoT and device testing: discovering and assessing exposed devices on a network
- Social engineering assessments: lab-safe phishing simulations that test human awareness
Seven steps to become a pentester
Pentesting is a craft learned in layers. Here is a sequence that respects that.
Get confident with networking for pentesting
You cannot attack what you do not understand. Get confident with the OSI model, TCP/IP, ports and how services talk to each other.
Learn Linux, Windows and the command line
Most penetration testing runs from a Kali Linux terminal, and many targets are Windows. Fluency with both saves hours.
Build a pentest lab and learn reconnaissance
Create an isolated lab, then use OSINT, Nmap and Netcat to map targets. Good recon makes exploitation faster and more accurate.
Learn web and network exploitation
Practise SQL injection, XSS, session hijacking, password attacks and firewall evasion in a controlled environment until you can explain each step.
Add Active Directory, wireless and cloud basics
Real engagements go beyond web apps. Study AD attack paths, WiFi assessment and cloud service models so you are ready for varied scopes.
Learn to write pentest reports
Practise writing findings with severity scored by CVSS, evidence, remediation and retesting notes. Clients read the report, not your terminal history.
Show your skill with projects and an internship
Complete a full network and web application pentest in a lab, build a portfolio, gain internship exposure and then attempt certifications such as CompTIA PenTest+ or OSCP.
Who makes a good pentester
This role suits particular strengths.
Persistent problem-solver who enjoys pentesting
Most attempts fail before one works. If you enjoy trying another angle after a dead end, you will do well.
Network administrator moving into pentesting
You already understand how systems are configured, which is where many weaknesses hide.
Student who likes writing pentest reports
Strong report writing is rare, and it can set you apart from candidates who only run tools.
Pentesting candidate who wants instant results
Pentesting can involve slow scanning, careful scoping and detailed documentation. If you need constant excitement, consider the SOC side first.
Pentester roles and salary ranges
From this path you can aim for Penetration Tester, VAPT Engineer, Red Team Associate or Web Application Security Analyst, and with added mobile and IoT skills, Mobile Security Analyst and IoT Security Analyst roles. Indicative entry-to-mid salary ranges for roles like Junior Penetration Tester run from about ₹3.5L to ₹9L a year in India, and roughly $55K to $95K in mature international markets.
These ranges vary significantly with company, city, specialisation and experience, and they are not a promise. Certifications and documented project work tend to help you climb within them.
How Skill IT Education trains pentesters
The core of our programme, a six-week Penetration Testing and Web Exploitation module, is built around this exact career.
A full-scope penetration testing module
Sixty hours cover SQL injection, XSS, the OWASP Top 10, Active Directory, wireless testing and professional reporting standards.
Tools pentesters use
You practise with Burp Suite, OWASP ZAP, SQLmap, Nikto, Hydra, Wireshark and Kali Linux in live lab exercises.
Portfolio-grade pentest projects
Build a Web Application Security Audit, an Internal Network Penetration Test Report and an Active Directory and Wireless Security Assessment.
Pentest capstone and two-month internship
An End-to-End Security Assessment capstone and a two-month real-time internship give you experience from planning to retesting.
Pentester interview and placement help
Resume reviews, mock interviews and our hiring-partner network help you take the next step. We support you, but we cannot promise a job.
Write your first pentest report on one lab target
Every pentester began with a single vulnerable machine and a blank report. Choose your target, take notes as you work, and write it up as if a client will read it. That habit alone will set you apart.