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In an increasingly digitized world, information systems security has become a priority for companies. Penetration testing, or pentesting, is one of the most effective ways of assessing an infrastructure's resilience to cyber-attacks. But what does a penetration test actually involve, and why is it essential?

Penetration testing, or "pentesting", is a crucial step in the process of securing an information system. It identifies vulnerabilities that could be exploited by an attacker, so that they can be corrected before an incident occurs. But one question often comes up: should this test be carried out in a production environment, or on a testing platform? Each of these approaches has its advantages and disadvantages, which need to be clearly understood.

At a time when threats are multiplying, carrying out a security audit has become essential for any organization concerned about protecting its data.

Whether for compliance, prevention or continuous improvement purposes, an audit enables you to assess the level of security of an information system or web application at a given moment.

Here's what you need to know to prepare for an audit and understand the main stages involved.

Source code auditing is an essential tool for identifying vulnerabilities that are often invisible during conventional penetration testing. By combining manual analysis and automated tools, it enables you to assess the intrinsic security of an application, while revealing errors in logic, rights management or implementation.

If you're just starting out, or simply want to test Kali Linux in an isolated environment, installing it on a virtual machine is an excellent option. This allows you to manipulate the distribution without touching your main system, in complete safety.

In this article, I'll show you how to install Kali Linux on VirtualBox in just a few minutes, without going through the classic installation process. We'll be using an official preconfigured image provided by the Kali team.