Adam has been keeping his bank information and passwords in the notes section of the iPhone, and he's wondering how secure that really is. Leo says that having different passwords for every account is a good thing and using a password manager is the best way to handle them. So take that next step and get LastPass. He should also turn on second factor authentication on every site that supports it.
Check out TwoFactorAuth.org. This lists all sites that support it. If his sites don't, he can click a link and tweet them to do so!