Before retiring I was the information security officer for a large financial institution. If you want to learn about security, unfortunately you will have to do most of the learning on your own, e.g., self-study. Aside from tuition reimbursement for degree programs that quite a few companies offer, won't teach you most of the stuff you need to know, most budgets don't provide for much annual training, so slow going on vendor specific stuff. You need to learn firewalls (can you say Cisco?), VPNs and setup, most likely MS security from Exchange/Office 365 to Windows enterprise security stuff, enterprise group policy, etc. It's a lot of hard work to keep up. Unless you have a degree, however, don't expect to advance very far, especially into mgmt. These are MY experiences, YMMV.