In other common tech professions, you can just start up your computer and make a game, develop a program, or build some machine at home with relative ease and show companies your work. But what about cyber-security? How are you supposed to impress companies or show that you're competent? I don't have access to sophisticated programs and technologies to develop and test security measures, or is there another way? I imagine knowing concepts of CS is one thing, but what about the application side?