A recent discovery by a team at google found that Cloudflare was leaking sensitive data i.e. passwords, private messages. For more info if your unaware here is the wiki on the situation https://en.wikipedia.org/wiki/Cloudbleed

We would like to let everyone know UGC does use Cloudflare but we can confirm that we were not part of this massive leak but none the less if you reused a password here or on any other sites using Cloudflare it is a good idea to change passwords just to be cautious. (Always Use Unique Passwords!)

Take care and happy gaming.
-UGC Staff