Cyber Tech Games IV: Christmas edition

December 16, 2025

The most magical time of the year also comes with a challenge that will put your cyber security, logic and analytical skills to the test.

In this special Christmas edition of Cyber Tech Games, AI has decided to optimise the logistics of gift delivery… but something didn’t go as planned.

The AI has cloned Santa Claus to make sure every household gets their presents on time… but it backfired: none of the clones has the key to access the gift distribution system.

All we have left is a mysterious binary file that might contain a clue. Will you be the first to find the key and unlock the delivery system?

How to participate?

No registration required. Just solve the challenge, check the legal terms and send your solution before Thursday the 18th at 10:00 a.m. CET to the following email: hello.telefonicatech@telefonica.com. Make sure to include a Word or PDF document detailing how you solved it (steps, screenshots, commands, etc.).

Prize for the elf who saves Christmas

The first person to solve the challenge correctly will win this edition’s special prize: a €200 Amazon gift card. Winners will also be featured on our social media and in the Telefónica Tech newsletter.

Ready to put your skills to the test and save Christmas?