Many people who use Apple devices daily often have a wrong sense of security. A few years ago, Apple devices were left aside of many security issues that Windows users faced for a long time. Also, based on a BSD layer, the OS wasn't a juicy target for attackers. Today, the landscape changed: Apple devices, especially Macbooks, are used not only by "creators" (musicians, designers, ...) and geeks but by many interesting profiles like managers and security researchers. All these people are working with interesting data. If you still think you don't need an antivirus or don't have to pay attention to security "because I'm running a Mac" you are wrong!