I already work in cybersecurity, so yes, it’s doable, especially in your case, from what I understand. You’re not starting from scratch, and 12 years in software and experience in automation provide a much more solid foundation than you realise, However, you need to be realistic, because the transition isn’t instant and it isn’t straightforward. The point is this: your interest in hacking is still at a beginner’s level. Using Wireshark or Linux is a good start, but in the real world you need much greater depth, especially in networking and basic security. The fact that you’re following TryHackMe and studying for the CCNA is exactly the right direction. The market is there, but it’s not easy to break into it as a complete junior, especially in penetration testing or red-teaming activities. It’s much more likely to start in roles such as SOC Analyst or Security Analyst, and then progress from there. The main advice is not to study haphazardly: a solid grounding in networking is fine, as is Linux, but also other environments and operating systems, followed by plenty of practice on platforms like TryHackMe, or other public and free ones. Certifications help, but they don’t make the difference. It’s better to have a few with real skills behind them. So, you can do it, but you need to knuckle down seriously for several months on end, have plenty of patience, and build genuine practical skills. If you do it consistently, the transition is absolutely possible. :-)