Patreon Hacked: The Basics of What Happened
Patreon goofed, and as a result, a lot of private information from their servers have been leaked. Credit card information is safe, as that isn't stored on Patreon's servers. However, it seems that the identities of backers who kept their patronage hidden are revealed by this leak. Private messages were also leaked.

You can check the Twitter feed of Troy Hunt (https://twitter.com/troyhunt) for news on this. He runs a site called Have I Been Pwned (https://haveibeenpwned.com), which lets you search to see if information of yours has been publicly leaked by site hacks. The leaked Patreon data is currently being processed there so people can find out if/how they have been affected.


Patreon themselves will probably send out an email about this soon.