I was primarily interested in gamehacking and web exploitation. I made a few friends from these communities and we often shared stupid exploits with eachother such as uploading some html file deep in a large corporations file structure and linking it between us for laughs.
My friend messages me one day that he managed to upload a c99 shell on a large website. He linked me to it, but deep within the structure to a plain text database of millions of credit cards.
Fast forward two months later: I'm ratting out every connection I know along with emails/names/info to the police, after they kicked my door down and seized literally every computing device in my house.
Phones, computers, tablets, desktop computers, and my NAS'. It's been 8 years and I have yet to hear from the police and they have dodged my emails, in person visits, and calls every time.
I lost over $10,000 worth of computer equipment. This was my hacker moment.