Could these girls be future spies?
These girls were one of the top 10 teams through to a national final with the National Cyber Security Centre, which is the government agency that helps to prevent cyber attacks.
Each team were given clues about who had mounted a cyber attack on a fictional company, they had to use their code cracking skills to find out the culprit.
For each clue they uncovered they were awarded points.
Take a look at how they did it!