Home - Luxembourg Cyber Security Challenge 2026

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If you love playing Capture the Flag (CTF), are passionate about Hacking and Cyber Security, this is the place to be!

The Lëtz Cyber Security Challenge (LCSC), is the National Hacking Championship of Luxembourg.

Through the LCSC, the Luxembourg National Team is selected and trained in order to compete at the European Cyber Security Challenge (ECSC) which takes place annually.

LCSC Overview & cycle of competitions

1 – 28 February 2026
Teaser
In the LCSC TeaserCTF, EVERYONE can participate. However, it is mainly used to select Juniors to participate at the LCSC Finals.
1 March – 1 May 2026
Qualifier
In the LCSC Qualifier, EVERYONE can participate. However, only those eligible to participate at the ECSC can be accepted for the LCSC Finals.
23 – 31 May 2026
W4C Qualifier
Open to everyone, but focused on giving girls and women a platform to show their skills. Only those meeting ECSC eligibility can advance to the LCSC Finals.
11 July 2026 Onsite at LHC
Finals
The best players of the LCSC qualifier, fulfilling the qualification requirements* for the ECSC, will advance to the next level: LCSC Finals.
12 – 16 October 2026 Bochum, Germany
European Cyber Security Challenge
The 10 that made the cut, will join the Luxembourg National Team to represent the Grand-Duchy of Luxembourg in European Cyber Security Challenge.

The best players of the LCSC qualifier eligible to participate in the ECSC will be preselected to participate in the LCSC Finals to take place before summer.

The LCSC Finals are organized by LetzPwn in close cooperation with the Directorate of Defence of the Luxembourg Government.

The finalists will have the opportunity to experience the national Cyber Range.

In the finals, you may encounter challenges from the following categories:

Forensics
Analyze data from disk images, memory dumps, or network captures to uncover hidden information.
Reverse Engineering
Deconstruct software binaries to understand their functionality and uncover hidden details.
Web Security
Explore web applications for vulnerabilities like SQL injection, XSS, and CSRF to bypass security.
Hardware Security
Examine hardware devices for vulnerabilities by analyzing firmware and other embedded systems.
Pwn
Exploit software vulnerabilities to gain control of a target system or process.
Crypto
Decrypt messages and crack cryptographic systems to access secure information.
Network
Intercept and analyze network traffic to discover vulnerabilities in protocols and configurations.
Stego
Extract concealed messages from images, audio files, or other media using steganography techniques.
OSINT
Use open-source intelligence techniques to gather and analyze information from publicly available sources.

The 10 that made the cut will join the Luxembourg National Team to represent the Grand-Duchy of Luxembourg at the European Cyber Security Challenge in Bochum, Germany.

LCSC is a great opportunity to learn and improve your skills in cyber security, meet new people, and have fun.

* If you are born after 31st December 2000, have the LU citizenship or have a permanent LU residency, register for the LCSC Qualifier and join the adventure!

European Cyber Security Challenge

The European Cyber Security Challenge (ECSC) is an annual event that brings together young cyber security talents from across Europe to compete in a series of challenges. The ECSC is an initiative by the European Union Agency for Cybersecurity (ENISA) and is hosted by a different country each year. The competition aims to raise awareness of cyber security and to connect high potentials with industry leading organizations.

Each participating country selects a national team of 10 talents to represent them at the ECSC. The teams compete in a series of challenges that test their skills in various cyber security domains. The challenges are designed to simulate real-world scenarios and require participants to demonstrate their technical knowledge, problem-solving skills, and teamwork abilities.

ECSC2023 in Norway hosted 29 teams from EU Member States and European Free Trade Association (EFTA) countries and 5 guest teams from all over the world.

The ECSC2026 will take place in Bochum, Germany as from 12th until 16th October. We count on you to improve the LU score in 2026!

Team Luxembourg

Team Luxembourg has been participating in the European Cyber Security Challenge since 2019. The team is composed of 10 young talents who are selected through the LCSC. Together, they prepare for the challenges they will face at the ECSC. The team represents Luxembourg at the ECSC and competes against other European countries to demonstrate their skills and knowledge in cyber security.

Want to join Team Luxembourg? Participate in the next edition to earn your spot on the team!

Check out the previous teams!