If you know who’s accessing your cloud, you can head off many problems before they turn into disasters. You should ensure easy access for your trusted users — but make it hard for everyone else. The lock on the front door of your home is there for a reason: to let the good guys in, and keep the bad guys out. But you must balance security with convenience (I know, story of your life). Deploy difficult-to-guess usernames, strong password protection (more on that later), two-factor authentication, and authorized devices to strengthen that lock.