"In addition to this, two months before the March breach, Stokes had published to his 'Bouquet' user account on the breached platform a photo of what appeared to be his school homework. In the top righthand corner of the homework was the name 'Peter William Stokes.'"

https://www.zetter-zeroday.com/tracking-peter-stokes-and-the-com-allison-nixon-and-her-work-unmasking-cybercriminals/