The list of what kind of personal data is protected in law varies state-by-state in this country - here's an overview based on what we're learning:
Most computer operating systems these days are designed to keep the data of multiple users securely separated, but you don't get that protection if you leave your devices running and unlocked, so always log-off! If you're leaving your computer or phone, make sure it's locked before you leave. Worried about remembering your computer password? Practice makes perfect.