How to become a penetration tester: A step-by-step guide for 2026

What is a penetration tester?

A penetration tester is an authorized security professional who simulates real-world attacks against systems, networks, and applications to identify vulnerabilities before malicious actors can exploit them. This proactive approach helps organizations find weaknesses that standard security controls might miss.

Organizations hire pentesters because automated scanners often fail to detect business logic flaws, chained vulnerabilities, and context-dependent weaknesses that attackers actually exploit. While a scanner might flag a missing patch, a human tester can determine if that missing patch allows them to pivot into a sensitive database.

Penetration testing differs significantly from automated vulnerability scanning. Scanning relies on predefined signatures to find known issues, whereas pentesting requires human creativity, contextual judgment, and the ability to chain multiple low-severity findings into critical attack paths.

Professionals in this field often hold titles such as penetration tester, ethical hacker, offensive security engineer, or red team operator. While these roles share similarities, they often imply different scopes of work and methodologies.

Vulnerability Management Buyer's Guide

This buyer’s guide helps you choose the right vulnerability management solution and align teams around shared security ownership.

Your work email here

Download

Skills every penetration tester needs

Penetration testing demands both deep technical knowledge and communication abilities that many technical roles overlook.

Technical skills

• Networking fundamentals: TCP/IP, DNS, DHCP, routing, firewalls. You cannot exploit what you do not understand.

• Operating systems: Linux proficiency is non-negotiable; Windows Active Directory knowledge is essential for enterprise engagements.

• Scripting and programming: Python and Bash for automation; understanding code helps identify application vulnerabilities.

• Web technologies: HTTP/HTTPS, APIs, authentication mechanisms, OWASP Top 10 vulnerabilities.

• Cloud platforms: AWS, Azure, GCP architecture, IAM models, and cloud-specific attack vectors.

• Security tools: Proficiency with Kali Linux, Nmap, Burp Suite, Metasploit, and cloud-specific enumeration tools.

Soft skills that separate good from great

• Report writing: Translating technical findings into business risk that executives understand determines client retention.

• Client communication: Scoping calls, status updates, and findings presentations require clear, non-jargon explanations.

• Time management: Engagements have fixed windows; efficient testers cover more ground and find more issues.

• Business context understanding: Knowing which vulnerabilities matter most to a specific organization's operations elevates recommendations.

Pentesters who can explain risk to executives command higher rates than those who only find technical bugs.

wiz academy

What is vulnerability management?

Vulnerability management is the continuous process of finding, prioritizing, and fixing security weaknesses, ensuring they are identified, validated, and recorded, before attackers can exploit them.

Read more

How to become a penetration tester: step-by-step

The path into penetration testing varies based on your starting point, but the core progression follows a predictable pattern of building foundations, developing offensive skills, proving capability, and landing your first role.

Step 1: Build your technical foundation

For complete beginners, the journey starts with networking fundamentals (like those covered in CompTIA Network+), Linux administration, and basic scripting with Python or Bash. You need to understand how systems are built and managed before you can understand how to dismantle them.

For those with IT experience, focus on filling gaps rather than starting from scratch. Identify which foundational areas need strengthening, such as learning command line proficiency if you are used to GUIs.

Structured learning paths, such as TryHackMe's pre-security path, Linux command line courses, and Python for automation, are excellent starting points. Rushing past these fundamentals creates knowledge gaps that often surface painfully during technical interviews and real engagements.

Step 2: Learn offensive security fundamentals

Once the basics are in place, move on to core knowledge areas like the OWASP Top 10, common vulnerability classes, exploitation techniques, and post-exploitation concepts. You must understand the "why" behind vulnerabilities, not just memorize exploitation steps.

Resources like OWASP WebGoat, PortSwigger Web Security Academy, and Hack The Box Academy provide hands-on environments to learn these concepts safely. Always follow each platform's terms of service and rules of engagement. Practicing only on systems you have explicit authorization to test is a non-negotiable professional standard. It is important to learn both manual techniques and tool-assisted approaches to ensure you understand the underlying mechanics of an attack.

Step 3: Get certified strategically

Certifications validate your skills to employers. However, depth in one area beats shallow coverage across many, so choose certifications that align with your career stage and goals.

Note that OSCP remains the most recognized certification for demonstrating practical capability in the industry. Avoid certification hoarding and focus on the ones that demonstrate the specific skills you want to highlight.

Step 4: Practice in legal environments

You need a safe place to practice your skills legally. Primary practice platforms include:

• Hack The Box: Realistic machines ranging from easy to expert; active community and regular new content.

• TryHackMe: Guided learning paths; excellent for beginners building toward independent problem-solving.

• PentesterLab: Web application focus with progressive difficulty.

• VulnHub: Downloadable vulnerable VMs for offline practice.

Bug bounty programs like HackerOne and Bugcrowd offer opportunities for real-world experience with legal protection. Additionally, Capture The Flag (CTF) competitions help build problem-solving speed and expose you to novel challenges. Setting up a home lab with virtualization software and intentionally vulnerable applications is also a great way to simulate network environments.

Step 5: Build a portfolio that proves capability

Hiring managers often cannot verify claimed experience, so they look for tangible proof of skills. A strong portfolio can bridge the gap between certification and employment.

• Writeups: Detailed walkthroughs of CTF challenges or retired Hack The Box machines demonstrating methodology.

• CTF rankings: Consistent participation shows ongoing skill development.

• Bug bounty hall of fame entries: Public recognition from legitimate programs validates real-world capability.

• GitHub repositories: Custom tools, scripts, or automation projects demonstrate coding ability.

• Blog or documentation: Technical writing samples show communication skills.

Quality matters more than quantity here. A few excellent, detailed writeups demonstrate your thought process better than dozens of superficial ones.

Step 6: Land your first role

Realistic entry points into the field include roles like junior penetration tester, security analyst with pentesting duties, or SOC analyst transitioning to offensive work. Many organizations hire from internal security teams, so starting in a defensive role can provide a viable path.

When preparing for interviews, expect technical assessments, CTF-style challenges, and scenario-based questions. Consulting firms are often common entry points due to the higher volume of junior positions available compared to internal red teams.

Watch 12-minute demo

See how Wiz cuts through thousands of CVEs and surfaces the few that are truly exploitable in your cloud — mapped to identities, exposure, and real attack paths.

Your work email here

Download

Career transitions into penetration testing

The most common transition paths come from adjacent technical roles. System administrators understand how infrastructure works, SOC analysts understand attacker techniques from the defensive side, network engineers understand traffic patterns and protocols, and software developers understand code vulnerabilities.

Each background provides unique advantages. Sysadmins often excel at infrastructure pentesting, developers are naturally suited for application testing, and SOC analysts understand detection evasion. The key is to leverage your existing knowledge while building the specific offensive skills needed to exploit those systems.

Penetration tester salary and job outlook

Salaries for penetration testers typically progress significantly as you move from junior to senior roles, and eventually to principal or red team lead positions. Specialization in high-demand areas, such as cloud and AI security, often commands premium compensation due to the scarcity of these skills.

Demand for qualified professionals continues to grow as organizations face increasing regulatory pressure, breaches costing millions on average globally, and expanding attack surfaces driven by cloud adoption and remote work. Cloud security expertise is increasingly valued as organizations continue to migrate infrastructure, creating a strong market for testers who understand modern environments.

Will AI replace penetration testers?

AI is already automating routine scanning, reconnaissance, and the identification of known vulnerability patterns, handling low-hanging fruit more efficiently than manual testing. However, AI cannot currently replicate creative exploitation chains, business logic flaws, social engineering, client communication, and contextual judgment about which findings matter.

The role of the penetration tester is evolving rather than disappearing. Testers who leverage AI tools become more efficient, covering more ground in the same engagement window. Furthermore, the rise of cloud and AI security testing creates new demand that offsets the automation of basic tasks, though the specific shape of the role will likely continue to change.

How Wiz helps security professionals understand attacker perspectives

Wiz does not perform penetration testing services. Instead, the platform complements pentesting programs by continuously identifying and prioritizing cloud exposure across your entire environment.

Wiz Attack Surface Management (ASM) discovers all internet-facing assets, maps their exposure paths, and correlates them with vulnerabilities, misconfigurations, and sensitive data access. This gives security teams a real-time view of what attackers can reach from the outside. By centralizing cloud risk context from multiple sources, Wiz helps teams triage and remediate pentesting findings more effectively, focusing effort on exposures that combine reachability, exploitability, and business impact.

The Wiz Security Graph visualizes what pentesters look for: misconfigurations, lateral movement paths, and IAM privilege escalation chains.For example, a medium-severity CVE becomes urgent when it's on an internet-exposed workload with an overprivileged role and a path to sensitive data. That's the kind of chaining pentesters do manually, and the kind of prioritization defenders need continuously.

Request a demo to see how Wiz surfaces cloud exposures that combine reachability, privilege, and access to sensitive data—the same intersections pentesters target during assessments.

Get complete visibility into vulnerabilities

Go beyond simple scanning and learn to hunt for critical attack paths by getting complete visibility into vulnerabilities across the cloud.

Work Email*

First Name*

Last Name*

Country

Phone Number*

Company*

Keep me updated about Wiz product releases, industry news, and events (You can unsubscribe at any time)

Subscribe me to the Wiz blog digest emails

Submit

For information about how Wiz handles your personal data, please see our Privacy Policy.

Your work email here

Get a demo

FAQs about becoming a penetration tester