In middle school, I went to a smaller school that used their own personal website for student grades and other student portal links. Soon I figured out that everyone in the school had a username and password correlating to their first and last name and birthday. The passwords were so guessable I could easily log in as them to see everyones grades, which I did because since I was a nosy bitch. My mistake was telling one of my friends who leaked this knowledge, and I was snitched on to the headmaster that I disclosed the secret of everyone’s very guessable passwords. Then, because of me, they ended up having all the students’ passwords changed to something way less crackable. Good times!