Netflix released 3 more security tools for the cloud that they have built called “Scumblr” and “Sketchy”, plus the “Workflowable”. Each one is a part of an IDS that is interesting on the aggressive techniques they use to see if a hack is occuring.
http://www.theregister.co.uk/2014/08/28/netflix_releases_homegrown_web_detective_tools/