This is a personal decision. If the faculty member you work with works in a department offering Ph.D. study (e.g., computer science, psychology), consider reaching out to that faculty member for their thoughts. There is no right answer. You should also look at the degree requirements. One advantage of the Ph.D. in Cyber Studies is that it is designed to facilitate interdisciplinary study. You can take courses in multiple disciplines that align more closely to your research area. Many of the most fruitful areas for impactful research lies at the interface between disciplines, which the Ph.D. in Cyber Studies actively cultivates. You’ll also be part of a community of scholars with varied disciplinary backgrounds. Through regular research seminars, you will be exposed to many new ways to approach problems, which can be intellectually invigorating.