What Is a Pen Tester Certification? 2026 Skills and Requirements Guide

Key takeaways

• A pen tester certification is a qualification that verifies your ability to assess vulnerable areas and secure networks, systems, and applications.

• The pen tester certification path usually begins with entry-level certifications that cover information security fundamentals before advancing to intermediate and expert-level credentials that require greater technical knowledge and experience.

• Entry-level or junior pen tester certifications include the Certified Ethical Hacker (CEH) and the OffSec Certified Professional (OSCP+).

You can find the best pen tester certification for you by looking at job postings for your preferred roles to better understand what employers are looking for. Discover the pen tester certification options that best suit your level of expertise and experience.

If you’re ready to start building cybersecurity skills like pen testing, enroll in the Microsoft Cybersecurity Analyst Professional Certificate. You’ll have the opportunity to learn key concepts like cryptography, vulnerability management, and intrusion detection and prevention in as little as six months. Upon completion, you’ll have earned a career certificate for your resume.

What is pen testing?

Pen testing is short for penetration testing. It's a type of ethical hacking that involves intentionally simulating cyberattacks using various tools and methods. By pinpointing how cybercriminals could exploit the system, network, or application you're testing, you can help the company you're working for strengthen weak areas before an attack happens. It's similar to the role QA testing plays in the software development life cycle.

While firewalls and antivirus software can help defend systems, thinking like a hacker can put the entire infrastructure through a vigorous test. As a pen tester, you'll safely attack servers, apps, mobile devices, networks, and any other potential entry points or points of exposure. If you can compromise the system, you might try using that to launch additional attacks on internal assets. This allows you to gauge how deep the potential access goes while identifying all possible weak spots.

Pen tests vs. vulnerability scans: What’s the difference?

Vulnerability scans use automated tools to look for possible weaknesses in security. Pen tests actively exploit those weaknesses to determine how deeply a cybercriminal could access the tested asset.

Read more: Penetration Testing vs. Vulnerability Scanning: What’s the Difference?

Types of penetration testing

You can use three main pen testing approaches:

• Black box pen testing: This closely simulates an authentic attack. You'll get minimal information about the system you're targeting. This helps you identify spots that are vulnerable to external attacks.

• Gray box pen testing: Gray box pen testing provides a focused assessment by giving you the knowledge and access that most users would have. This allows you to efficiently assess the asset's security and focus more on the systems that hold the greatest value from the beginning of the test. It more closely simulates an attack from someone with long-term asset access.

• White box pen testing: In this approach, you'll have full access to the asset's source code from the beginning. This allows you to run a comprehensive test and in-depth security assessments. It also provides access to all areas, including code quality, something black box testing can't provide. White box approaches require the most time since you’ll look at large volumes of data, including source code, to evaluate internal and external weaknesses.

What is a pen tester certification?

Pen tester certifications demonstrate your proficiency and knowledge of penetration testing. By finding vulnerable areas, this critical cybersecurity function helps keep networks, systems, websites, and applications safer from breaches and hacking. As a pen tester, your job falls under the umbrella of ethical hacking. You’ll play an essential and sensitive role for the companies and organizations you work for.

Do you need a certification to be a pen tester?

A pen tester certification is not always required. However, certain employers may prefer candidates who have them. They can also be an excellent way to demonstrate your skills in specialized areas or with certain technologies.

Classification levels for pen testing certifications

The requirements for a pen tester certification vary, but can often be broken down into three levels: entry-level, intermediate or mid-level, and advanced or expert-level. Entry-level certifications often cover the basics of information security, including conducting vulnerability scans, leading in-depth vulnerability assessments, and finding security flaws. Intermediate certifications require a bit more knowledge and experience, but don’t have requirements as extensive as those for getting certified at the expert or advanced level.

Where to get pen testing certification

Many leading pen testing certifications come from professional organizations like CompTIA, the International Council of E-Commerce Consultants (EC-Council), OffSec, Global Information Assurance Certification (GIAC), and InfoSec Institute. To choose the certification that’s best for you, look at the required training and experience, the requirements for maintaining that certification, and how the industry views the organization issuing the credential.

CompTIA

CompTIA is considered among the newer organizations offering pen testing certifications. Still, it has a solid reputation throughout the information security and IT industry for its credentials, including its intermediate-level CompTIA PenTest+. This certification is a great match for those considering working with the government since it complies with the US Department of Defense requirements.

You won’t need to fulfill experience requirements or other prerequisites to take this exam. However, CompTIA recommends at least three years of working experience in pen testing, and the Network+ or Security+ certification. If you have little hands-on knowledge, you'll need to prepare vigorously for this test. It focuses heavily on in-depth, hands-on technical know-how.

EC-Council

• Entry-level pen testing certification: EC-Council lists its Certified Ethical Hacker (CEH) credential as a core offering. You'll take a training course and need to pass both a four-hour exam and a six-hour test. The process is designed to challenge your ability to use ethical hacking techniques like scanning networks, hacking systems, and conducting vulnerability analyses to solve security challenges across different networks and operating systems.

• Intermediate-level pen testing certification: The next level credential you might consider getting is the Certified Penetration Testing Professional (CPENT). The training program is designed to teach you about performing pen tests for enterprise networks, using a live practice range and instructions on how to pen test for Internet of Things (IoT) and Operational Technology (OT) systems, customizing scripts, building your own tools, and more. The online hands-on exam presents you with rigorous challenges to test your knowledge, skills, and ability to focus.

• Expert-level pen testing certification: The Licensed Penetration Tester (LPT) credential is a master-level credential. You get LPT certification if you score 90 percent or higher on a 24-hour exam [1]. Scores of this level or better differentiate your ability to test even well-protected systems. You'll come up against networks with multiple layers and in-depth defenses while working under pressure and using advanced techniques.

OffSec

• Entry-level pen testing certification: The OffSec Certified Professional (OSCP+) credential can help you break into pen testing. You'll need to have a good foundation in Linux and Windows administration, scripting with Bash or Python, and TCP/IP networking. You will also be required to take Penetration Testing with Kali Linux, one of the organization's PEN-200 courses. This test is a practical lab that you complete over 24 hours.

• Intermediate-level pen testing certification: OffSec also offers a more advanced credential, the OffSec Experienced Penetration Tester (OSEP), which requires taking the Evasion Techniques and Breaching Defenses course and passing the 48-hour practical lab exam.

• Expert-level pen testing certification: The OffSec Certified Expert3 (OSCE3) is an advanced-level credential that you might consider after getting the OSCP credential and spending more time gaining experience in the field. You'll conduct a penetration test of the organization's isolated exam network, which has different operating systems and configurations. The test’s design demonstrates your expertise and ability to work well in a stressful environment.

GIAC

• Intermediate-level pen testing certification: The GIAC Penetration Tester (GPEN) certification doesn’t have any prerequisites, but it does require you to have knowledge of Windows and Linux, a good understanding of TCP/IP protocols, and a solid understanding of concepts like password attacks, Metasploit, and scanning for targets. The test is designed to demonstrate your skills in conducting pen testing, including planning and recon, scanning, escalation, and pivoting.

• Expert-level pen testing certification: GIAC’s Exploit Researcher and Advanced Penetration Tester (GXPN) credentials are for advanced pen testers. The exam will test your ability in various areas, including getting around network access controls, using and developing advanced fuzzing techniques, exploiting cryptographic weaknesses, exploiting networks, and writing shellcodes.

InfoSec Institute

• Entry-level pen testing certification: Gaining the Certified Penetration Tester (CPT) credential can help you start your career in pen testing. It's designed to demonstrate your knowledge and abilities to use pen testing practices and methods. The exam consists of multiple-choice and hands-on exams that require you to overcome three challenges.

• Intermediate-level pen testing certification: To complete the digitally-focused Certified Mobile and Web App Penetration Tester (CMWAPT) credential, you’ll need to take nine online courses. You’ll also need a good understanding of pen testing concepts, including pen testing methodologies for web and mobile applications and principles of secure coding.

• Expert-level pen testing certification: You'll need advanced expertise and pen testing skills for the Certified Expert Penetration Tester (CEPT) credential. The exam showcases your mastery in various areas, including pen testing methodologies, reverse engineering, writing shellcode for both Unix and Linux, and exploit creation for Windows, Linux, and Unix.

What is the best pen tester certification?

Not sure what certification is best for you? One of the most effective ways to choose is to look at job listings to get a feel for what hiring companies are looking for.

Additional resources for pen testers

As a pen tester, having a solid network can be helpful throughout your career. For example, joining a professional organization like the Information Systems Security Association (ISSA) can provide valuable resources that can help connect you with training, workshops, and career centers. Professional organizations can also provide information and training for some leading certifications. Additional examples include:

ISC2

This nonprofit association helps its members stay current on the constantly evolving security landscape with its continuing education program, networking options, collaboration opportunities, and certification programs. Some 265,000+ global members work as chief security officers, technology officers, systems engineers, and network administrators.

CompTIA

CompTIA is a diverse organization that advocates for the entire information technology ecosystem, including the professionals who design, deploy, manage, and secure its technology. This vendor-neutral organization offers certifications, training, market research, and education.

ISACA

ISACA members have access to an extensive network of resources, including its 195,000+ global members of various IT professionals ranging from security pros to IT auditors to executives. In addition to professional credentialing, members also have opportunities for professional development, like online training, continuing education, and conferences throughout the year.

In-demand skills for pen tester jobs

Because this is a mid-to-high-level role in cybersecurity, gaining practical experience will be a vital part of your career path. If you're a student or transitioning out of a related role, you might begin with an entry-level IT auditing, systems engineering, or networking job, for example. A few essential workplace and technical skills for pen testers to master include:

• Familiarity with pen testing tools like Kali Linux, Nmap, Metasploit, and John the Ripper

• Ability to use various computer languages, including Bash, Python, and PowerShell

• Advanced expertise in exploits and vulnerabilities

• Deep understanding of various operating systems, including Windows, Linux, and Unix

• Comprehensive knowledge of network protocols, including the Address Resolution Protocol (ARP), Domain Name System (DNS), and Transmission Control Protocol/Internet Protocol (TCP/IP)

• Desire to stay current with pen testing strategies, risks, and technologies

• Strong written and verbal communication skills

• Ability to collaborate with other team members

Are pen testers in demand?

Given the sheer volume of data created across every industry, it’s unsurprising that the US Bureau of Labor Statistics (BLS) anticipates jobs like pen testers to grow by an average of 29 percent between 2024 and 2034 [2]. Pen testers are needed in various fields, including technology, finance, and health care. Nearly any business is a potential target for hackers and cybercriminals.

Support your growth with actionable resources

Explore career paths, assess your skills, and connect with resume guidance while browsing our Career Resources Hub. Or if you want to learn more about cybersecurity and penetration testing, check out these free resources:

• Watch on YouTube: Cybersecurity Career: Penetration Testing Guide

• Read our Career Chat issue: 4 Ethical Hacking Certifications to Consider

• Learn key concepts: Cybersecurity Glossary: Key Terms & Definitions

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