Ask HN: How to transition from Data Science to Cyber security?

I am working as a Data Scientist for the past three years. I feel that the number of companies earning money through DS is limited and hence my career might hit the pavement soon ( I might be wrong here.).

Hence I want to transition into another Domain where Data Science skills can be helpful.

Would it be easier to transition from DS to Cyber-security? Which branch of Cyber-security would be easier to transition, if at all?

Anyone here who has made this journey, and can provide some advice?

Thanks