Advent 2026 · 1 To 24 December

The Twenty-Four Days

A 24-door cyber advent calendar for people who know their way around a log file. One company, one December, one attack assembling itself a day at a time. A new door opens at midnight, UK time, until Christmas Eve.

Free to play. All you need is a browser and a text editor.

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24