Ask HN: Is cloud security a valid field to specialise in? How?

I'm a backend/cloud dev (AWS and starting with Salesforce) who wants to specialise and consult.

Is cloud security a promising field? I don't have the security credentials yet but since most of my experience is backend and cloud, focussing on security aspect seems the smoothest path for me.

From a personal perspective, I'm very interested in privacy and things like GDPR. Is that something companies would be interested in?

btw I'm in my mid 40s.

Any pointers highly appreciated, thanks