Well, my main point is I think it is somewhat absurd to blame GitHub for this. Sure, they can scan for SSN numbers, etc. but how many hackers are going to post

Well, my main point is I think it is somewhat absurd to blame GitHub for this. Sure, they can scan for SSN numbers, etc. but how many hackers are going to post stolen information to their Github account? A second matter though is there might be a business model around a service that scans for sensitive information or proprietary code on Github, Bitbucket, etc. My guess is though it is much easier to detect a breach upon data exfiltration versus scanning the web.