2004 / age 14 I discovered an exploit on the GameFAQs message boards that allowed me to use HTML in topic titles. I just used this to post some topics with images as titles, instead of looking for SQL injections.

That same year I obtained every student's social security number from my school's database, though I didn't write them down. I never told the school about their massive security flaw because I was afraid I would get in trouble.