cybersecurity

I don’t think there’s some minimum XP (in terms of YoE) bar to hit. You just need to be able to demonstrate your practical XP in some manner. Some people get this through work in IT/cyber, others through academics and others still through personal projects and doing things at home. There is a TON of self-teaching options these days through online trainings, CTFs, cons, meet-ups, etc… And lots of ways to document and market your experience and know-how (blogs, social media, podcast, etc…). Personally, I suggest learning a bit of coding, some cloud XP, start a small blog or post about what you’re learning on a micro-blogging platform and network network network.

As for your current place of employment, having a VERY legacy environment can actually be somewhat good for security as it may be “easier” in some respects to find misconfigurations and Vulns. Does your company have any security resources? If not, try to volunteer to help in that area, if they do, introduce yourself and ask to shadow/help/learn from them.

If anything that’s a great learning environment. Offensive security is a lot of reverse engineering, figuring out how stuff works based off (extremely) limited information and understanding how best to attack it.

Moreover, as these are old systems, they’re more likely to be outdated and vulnerable - not that you should try without permission or a clear understanding of what you are doing, particularly on production gear.

At any rate, no company will pay you to learn a completely different job to the one they hired you for. So you’re going to have to spend some of your own time learning about security. Where to start has been repeated ad nauseam online so I won’t attempt it.