Cyber Security can be anything form a SOC analyst who looks at system logs and monitoring systems to a cryptographer.
For the most part Cyber Security is as varied as IT itself.
AI on the other hand would require a very specific set of skills and theoretical knowledge and a very good grasp of mathematics the latter is where most people fail even if they know the maths without being a mathematician at heart and being able to use it essentially as a language you likely won’t get too far even with all of the abstractions deep learning frameworks provide.
This isn’t just because of the mathematical nature of deep learning but also because the applications themselves are also mathematically complex e.g. computer vision.
This is basically the equivalent of asking what should you do website development or signal processing as a developer these aren’t exactly on the same level.
AI has way too much hype behind it. Deep learning is not the best solution for most business data problems.