Lori can't get access to her Exchange server. Her password doesn't work ever since an employee who was running it left the job. Leo suspects he changed the passwords before he left. But if she has physical possession of the server, she should be able to change the passwords. If the employee has access to her server, then he has control, even outside of the company. So Lori will have to go to him or the company he represents and get the passwords. If he's proven to be untrustworthy, then they'll probably have a hard time getting that information.
Joe's wife can't remember the login on her old Windows computer. Leo says that on older Windows Vista computers, security isn't as good as it is now. There used to be a hidden administrator account. Leo recommends trying "administrator" or "admin" with blank password. If that works, she can get in and create a new account to move her stuff over too. There are also programs that she can run that can crack the password. NT Crack is one. But to use it for college?