: Manufacturers ship cameras with simple usernames and passwords (like "admin/admin") that many owners never change.

This search string has become infamous in certain corners of the internet because it highlights a massive security blind spot:

Never leave your camera on the "admin/admin" or "1234" default settings.

You are a hobbyist. You find a live feed of a living room. A family is watching TV. You watch for 30 seconds out of curiosity, then close the tab. You did not technically "hack" anything (there was no password). However, you have violated common decency and likely the terms of service of your ISP.