Penetration Testing

Yash Goti

Dec 23, 2022

4 Min


  1. What is Penetration Testing?
  2. Penetration Testing Phases
  3. Penetration Testing Methods
  4. Penetration Testing Importance
  5. Conclusion

What is Penetration Testing?

Penetration testing, also known as “pen testing” or “ethical hacking,” is the process of simulating a cyber attack on a computer system, network, or web application to assess its security and identify vulnerabilities that could be exploited by a malicious actor. The goal of penetration testing is to identify and evaluate the security weaknesses of a system, rather than to exploit them for unauthorized access.

Pen testing can involve the attempted breaching of any number of application systems (e.g., web applications, mobile applications, networks, APIs, frontend and backend servers) to uncover vulnerabilities such as unsensitized inputs that are susceptible to code injection attacks.

Insights provided by the penetration test can be used to layer up your WAF security policies and patch detected vulnerabilities.

Penetration Testing Phases

Penetration testing typically follows a structured process, often divided into several phases. These phases include:

  1. Planning and Reconnaissance: In this phase, the tester gathers information about the target system, including its IP addresses, open ports, and running services. This information is used to plan the attack and identify potential vulnerabilities.
  2. Scanning and Enumeration: In this phase, the tester uses tools to scan the target system for vulnerabilities and gather more detailed information about the system. This includes identifying open ports and services, as well as any potential weaknesses in the system’s configuration.
  3. Gaining Access: In this phase, the tester attempts to exploit the vulnerabilities identified in the previous phase to gain unauthorized access to the system. This may involve exploiting known software vulnerabilities, guessing weak passwords, or using social engineering tactics.
  4. Maintaining Access: Once access has been gained, the tester will attempt to maintain and extend their access to the system. This may involve installing backdoors, creating new user accounts, or escalating their privileges.
  5. Covering Tracks: In this phase, the tester will attempt to conceal their presence on the system and remove any evidence of their activities. This may involve deleting log files, modifying system settings, or hiding malicious code.
  6. Reporting: In the final phase, the tester will document their findings and provide a detailed report of their activities, including any vulnerabilities discovered and the methods used to exploit them.

Penetration Testing Methods

There are several different methods that can be used for penetration testing, including:

  1. Black Box Testing: This method simulates an attack by an external attacker who has little or no knowledge of the target system. The tester is only provided with the target’s IP address or domain name, and they must use their own tools and techniques to gather information and identify vulnerabilities.
  2. White Box Testing: This method simulates an attack by an internal attacker who has knowledge of the target system, such as an employee or a contractor. The tester is provided with detailed information about the system, including its network diagrams, source code, and configuration files.
  3. Gray Box Testing: This method is a combination of black and white box testing. The tester is provided with some information about the target system, but they must also use their own tools and techniques to gather additional information and identify vulnerabilities.

Penetration Testing Importance

Penetration testing is an important tool for identifying and evaluating the security of a system. It allows organizations to proactively identify and address vulnerabilities before they can be exploited by attackers. Regular penetration testing can help organizations to:

  1. Identify vulnerabilities: By simulating a cyber attack, penetration testing can identify vulnerabilities in a system that may be difficult to detect using other methods.
  2. Evaluate the effectiveness of security controls: Penetration testing allows organizations to evaluate the effectiveness of their security controls, including firewalls, intrusion detection systems, and antivirus software.
  3. Improve incident response: Penetration testing can help organizations to identify weaknesses in their incident response processes, allowing them to improve their ability to respond to and recover from a real-world attack.


Penetration testing is an important part of any organization’s overall security strategy. It can help identify vulnerabilities in a system before they can be exploited by malicious actors. It is important to note, however, that penetration testing should only be performed by qualified and experienced professionals, and that it should be just one part of an overall security strategy.

Yash Goti
Yash GotiCo-Founder & COO

Yash Goti, Certbar’s Co-Founder & CEO, excels in Client Relations, Business Development, and IT leadership. With 5+ years’ experience, he’s a financial services expert, ISO 27001 Auditor, and dynamic presenter in cybersecurity.