Cloudflare DNS announced on Feb 23rd 2017 that it suffered a security incident over the last few months that could affect a vast swath of the internet. It boils down to a since-repaired buffer issue that could potentially have exposed sensitive data, including website authentication tokens, to search engine caching. The Quakecon Forums is a user of Cloudflare but from what we can tell, we are not directly affected by the leak. Cloudflare has said only 150 domains were effected and a user made list is now available of effected sites. https://github.com/pirate/sites-using-cloudflare To be on the safe side we still recommend that you change your password.