I met him on Telegram a while back. The joke is that he developed a wallet app in X months, but could have done it in less if he didn't have homework.
He's definitely one of my motivations to pursue blockchain/cryptography. I used to be secure (in my bubble) that I was the best at what I do (for my age) until I met Saleem.
[0]: https://krebsonsecurity.com/2018/03/15-year-old-finds-flaw-i...