https://github.com/pirate/sites-using-cloudflare https://en.wikipedia.org/wiki/Cloudbleed Between last September and now, there has been a small (apparently single character typo) bug hiding in cloudflare's server code which causes buffer overflows that can return sensitive information from cached server memory to client machines. Above is an available master list to check against (good luck if you don't have grep handy) and a smaller list of more popular sites using coudlflare's services. It is recommended you change your passwords for any of the listed sites to which you have submitted sensitive info, but take heart that the odds your info having been stolen through this exploit are quite low. Better safe than sorry though. I'm going to go change my Authy, Patreon, and Humblebundle passwords now.