Do you think it is a harmless prank to mess with another persons account? What would you do if you find a computer was left on and accounts were not logged out? What would you want someone to do if you left your computer on and accounts open?

I do not think it is a harmless prank to mess with another persons account without their consent because it is an invasion of privacy. If I was to find a computer left on and accounts were not logged out, I would just log out of their stuff because I wouldn't want someone going through my stuff. I would want them to log out of my accounts, just as I would theirs.