Lucas was 16 when he got into trouble for hacking his school's computers. Twice. "It's quite a sense of achievement when you've succeeded in doing something that two or three trained professionals have spent a lot of time trying to stop you doing," he said. Now he has joined Cyber Choices, a hacker rehab course. Tap the link in @BBCNews’s bio to read more about this story. #Hacking #CyberCrime #BBCNews