The GCHQ Christmas Challenge 2024(gchq.gov.uk)
gchq.gov.uk
The GCHQ Christmas Challenge 2024
https://www.gchq.gov.uk/news/gchq-christmas-challenge-2024
1 comments
Dupe (14 points, 15 hours ago, 4 comments so far) https://news.ycombinator.com/item?id=42385929