Interviewing for a position with stale experience
I may be interviewing for a position that relies on a skillset (infosec) that I've really lapsed in for the past 5 years since working at my current position (QA). I have a background in both but especially since I started my current position (since 2016), I've been heavily if not all focused on QA. The context of this is that I'm working on a team that is technically in the infosec space but I'm more on the development side and pretty strictly QA which has had very little to do with actual infosec practices. I haven't kept current with certs that I obtained years ago (when I was more involved in infosec) and current 'applied' experience just isn't there; part of me sort of lost 'interest' in the infosec arena over the years as I've only really been doing QA but I feel it would be a good thing to get back into it.
Any suggestions on how to approach the interview/discussion with all this in mind? I'm not exactly sure how to respond/proceed when they realize that I've had very little actual involvement in the infosec space for the past 5 years (which is a pretty long time).