I didn't experience what the original poster did with the missing video/content in the "Secure Access" section, but there is a missing objective 4.1.c "Implement Cisco IOS Resilient Configuration". In that Router Security episode, Ronnie goes over privilege levels and role-based access (views), and hints that there is more to talk about towards the end, but nothing more on this objective.
I'm not expecting a new video just for one topic, but was just curious about it because the series is so specifically geared towards each objective. There is plenty of material out there I can find on my own regarding "Resiliant Configuration",,.. was just curious why maybe it was left out.
Ronnie, as always you are doing a great job explaining some pretty difficult concepts in this series, with some pretty tough configurations, so I think you are doing a great job!