Sam is worried that his Windows computer is running as an administrator. Leo suggests creating a second administrator account that he won't use. Then downgrade his regular account to standard user. He could make them look completely different to tell them apart. Then if he needs to install something, it will ask him to log in as an administrator. Any software that needs him to run as an admin, he can just right click on it, select the "run as admin" option and type in his password. This will protect him from over 90% of all malware trying to get on his system.