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Penetration testing, often abbreviated as pen testing, is a simulated cyber attack on a computer system, network or web application to evaluate the security of the system. The aim is to identify vulnerabilities in a system, assess the potential impact of an exploitation of these vulnerabilities, and provide recommendations for remediation.

Penetration testing (pen testing) is a process of identifying and exploiting vulnerabilities in a computer system or network to determine its security weaknesses. Pen testing is performed by ethical hackers, also known as security researchers or penetration testers, who use a combination of manual and automated tools to simulate real-world attack scenarios.

The findings from a pen test can help organisations understand their security posture and make informed decisions about how to improve it.

The pen testing process is typically conducted by trained professionals who follow ethical guidelines to ensure that the testing is done in a safe and controlled manner. There is also automated pen testing software which can be installed to simulate these attacks regularly, carrying out routine security checks.

The scope and methodology of a pen test can vary depending on the specific needs of the organisation.

How is pen testing carried out?

The typical process of pen testing includes the following steps:

Planning and reconnaissance

In this initial phase, the pen tester gathers information about the target system or network, such as its IP address, operating system, and applications running on it.


The pen tester uses various tools to scan the target system for open ports, services, and vulnerabilities.

Gaining access

Once vulnerabilities are identified, the pen tester attempts to exploit them to gain unauthorized access to the system.

Maintaining access

Once the pen tester has gained access, they attempt to maintain that access by creating backdoors or other means of persistent access.

Analysis and reporting

After the testing is complete, the pen tester analyses the results and creates a report detailing the vulnerabilities found, their severity, and recommendations for remediation.

How can my business benefit from penetration testing?

Penetration testing can provide numerous benefits to your business, including:

Improve your Organisation’s Security

Penetration testing helps to identify potential security vulnerabilities in your systems, allowing you to take the necessary steps to mitigate the risks and improve your overall security posture.

Make Sure your Systems are Supporting Compliance

Many industries have strict regulations and standards for data security, such as PCI DSS for payment card processing, HIPAA for healthcare, and the GDPR for European data privacy.

Penetration testing can help you ensure that your systems meet these requirements, reducing the risk of costly fines and legal penalties.

Improve Customer Confidence

By demonstrating your commitment to security and data privacy, you can build trust with your customers and improve their confidence in your business.

Reduce Your Risk of Data Breaches

Penetration testing can help you identify and remediate potential security threats before they can be exploited by cyber criminals, reducing the risk of data breaches and the associated costs and reputational damage.

Being Better Prepared

By performing regular penetration testing, you can identify and address potential security threats and improve your ability to respond to security incidents, reducing downtime and minimising the impact of a breach.

Greater Efficiency

Automated penetration testing tools can help you identify potential security threats quickly and efficiently, allowing you to focus on addressing the most critical issues first and improve the overall efficiency of your security operations.


Overall, penetration testing can help you secure your systems, meet regulatory requirements, build customer confidence, reduce the risk of data breaches, and improve your overall security situation.