With a math background, have you thought of getting into the data encryption arena? There are need for skilled programmers that need properly integrated / written encryption.
What would I have to do for that field?
Crunch many numbers and work algorithms

create ciphers and all sorts of mathlete stuff I'd imagine. There is a free Stanford course available online, starts up this week if you want to sign up:
https://www.coursera.org/course/cryptoIt is an intro course and 6 weeks long, not much pre-reqs for it. If you have some programming experience as well as knowledge of discrete probability theory, it would help, but not required. But hey it's free, so why not give it a go.
With a math background, have you thought of getting into the data encryption arena? There are need for skilled programmers that need properly integrated / written encryption.
What about a Master's in Cybersecurity?
As for that, well it is going to cover a number of topics. From UMUC's catalog, it looks like a 36 credit program. That means you will learn a little about a lot. It may give you a base to jump from but may not give you specific skills to go further. And unless someone else is paying for it (current employer maybe), then there are much more inexpensive ways to gain some of this general knowledge.