• I've covered the most important security issues you will be facing in any rails application out there when you are building or securing one. However, there are plenty more of such security issues and with how I've explained the ones I've covered in this course, you can easily understand the other security issues using the same methodology and get a firm grasp of rails security.
• You can build your own security features using the information I've shared with you so far. If you can build a rate limiter, you can easily build a circuit breaker, etc. If you do build any feature, do let me know and we can review it together ;)