You already know quite a bit about Rails security? So you may want to skip the content for beginners and go through the topics below, instead. Each resource is usually not just a link to a gem/website but collects all information/links/answers about a topic. So don’t skip the topics on this page if you already know what it is. For example, you might know Rack::Attack but how to whitelist search engine spiders with it might be new to you (just guessing).
A Content Security Policy (CSP) strategy
CSP is a great way to reduce or completely remove the number 1 web app security vulnerability – Cross-Site Scripting (XSS).
A guide to a week with a Rails security strategy
This includes a 5-page guide on how to form the habits and a plan for each day for you to follow.
New Rails security HTTP headers
Some are sent by default in Rails now
Rack::Attack: Rate limits against DDoS and abusive users
Track and throttle requests
Note that I’ll add more to this page, subscribe to the mailing list to hear about it first.