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OffSec

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255 reviews
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Average star rating
4.6
Serving customers since
2006
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Kali Linux

239 reviews

Kali Linux is an open-source, Debian-based distribution tailored for advanced penetration testing and security auditing. It offers a comprehensive suite of tools and configurations, enabling users to focus on their security tasks without the need for extensive setup. Kali Linux is accessible across multiple platforms and is freely available to information security professionals and enthusiasts. Key Features and Functionality: - Extensive Toolset: Provides hundreds of pre-installed tools for various information security tasks, including penetration testing, security research, computer forensics, reverse engineering, vulnerability management, and red team testing. - Multi-Platform Support: Compatible with various platforms, ensuring flexibility and adaptability for different user needs. - Cloud Integration: Available as an Amazon Machine Image on AWS Marketplace, allowing users to deploy Kali Linux instances in the cloud efficiently. Primary Value and User Solutions: Kali Linux addresses the critical need for a robust and comprehensive security testing environment. By offering a vast array of tools and configurations out of the box, it enables security professionals to conduct thorough assessments, identify vulnerabilities, and strengthen defenses without the overhead of manual tool integration. Its availability on platforms like AWS further enhances its utility by providing scalable and on-demand access to a powerful security testing environment.

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OffSec

15 reviews

The Penetration Testing with Kali Linux (PWK/PEN-200) online ethical hacking course is self-paced. It introduces penetration testing tools and techniques via hands-on experience. PEN-200 trains not only the skills, but also the mindset required to be a successful penetration tester. Students who complete the course and pass the exam earn the Offensive Security Certified Professional (OSCP) certification. This course features five recently retired OSCP exam machines now added to the PWK labs. These five machines represent an entire OSCP exam room.

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Offensive Security Testing Services

1 review

Secure your career in information security. Level up in penetration testing, web application security, or network security with the team behind Kali Linux and the OSCP certification: Offensive Security.

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OffSec Reviews

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Nidhi S.
NS
Nidhi S.
Scientific Project Manager | Pharma & Biotech R&D | GMP • GLP • CAPA | SAP | Oncology & Cell Therapy
05/14/2026
Validated Reviewer
Review source: Organic

Best OS for Ethical Hacking, Simple Yet Powerful

I find Kali Linux to be the best OS for ethical hacking. It's easy to install and use, which I really appreciate. The operating system is clean, and I like the easy folder management. It's basically a clean Ubuntu OS, which can be started in any VM, making it very versatile. The initial setup is as simple as plug and play, which is fantastic.
Chaitanya S.
CS
Chaitanya S.
Test Engineer - Functionality || Game Tester || Manual Testing
05/14/2026
Validated Reviewer
Review source: Organic

An Essential Tool for Cybersecurity Professionals

I use Kali Linux for my everyday office work because it's kind of an ocean with several tools for networking and security. I like Kali Linux a lot compared to other operating systems. Tools like NMap and Wireshark make it easy to scan networks, analyze traffic, and identify vulnerabilities in real-time. This is especially useful in office environments where maintaining secure internal networks is critical. Instead of juggling multiple third-party applications, Kali Linux provides all kinds of tools pre-installed, which was the main reason we switched from using Windows 11 and Ubuntu. Even though the initial setup can be complicated for beginners during disk partitioning, the rest of the setup can be easily managed.
Debjit G.
DG
Debjit G.
05/14/2026
Validated Reviewer
Review source: Organic

Purpose-Built for Network Security, Not for Everyday Use

I like how Kali Linux handles all the versioning and library conflicts. After installation, there is an environment where every tool is tested to work with others. The Kali maintainers push updates and test how tools interact, ensuring that if an update to a core library would break another major tool, the team holds the update or patches the tool first. It's easy to install using a Debian wizard, which is really convenient.

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What is OffSec?

Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources. Build the path to a secure future with OffSec.

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Year Founded
2006