Yeah. Twenty years ago. I worked for two ISPs over the years. At both of them the test accounts for support to use were unmonitored accounts due to how many places they were used and logged in by. In both cases I simply put those login details into my home setup and got free internet for probably about three years. Before that some friends got a un/pw file from a university and decrypted a few hundred names and passwords for accounts which gave free dialup access to students. Again multiple logins seemed allowed so the only person losing was the uni/isp. Used to be able to pull about ~14gb a month through a dialup connection. Probably via napster, kazaa and soulseek, I can't remember if torrents were a thing back then.