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For becoming a CISO, you need to complete a bachelor's degree. Basically the students select best degree in computer science or cyber security. A student can also complete masters degree in information technology security for better chances of growth in career. Besides this a student can also study  MBA in Cybersecurity or Information Technology.

Mentioned below is the link of colleges and all the details related to CISO, you can click on below link:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://dqxeclau.top/university/university-of-washington/cybersecurity-cisos-view-certification-course&ved=2ahUKEwi9l7ij1cPyAhXHSH0KHealDUYQFnoECAkQAQ&usg=AOvVaw0oUgR9I3UwNIc-6LvVm4N0