The CISO role is evolving rapidly, so there is no standard guidebook to getting hired, progressing, or succeeding as a CISO. To understand the skills, experience, and education that qualify leaders to defend the world's largest companies, we analyzed data from CISOs and heads of security in the Fortune 500. This information can help: 1) current CISOs identify their next challenge; 2) those looking to hire a CISO understand what to look for; and 3) those wanting to become CISOs how to get from where they are to where they want to be.