Facebook is apologizing once again after a bug changed 14 million users' privacy settings to 'public'.
The bug changed the user's setting to the default for four days last month, meaning a post you thought was private might have been there for all to see,
Facebook says the bug was fixed and all posts during that time have since been changed to private, even posts that were meant to be public in the first place.
Facebook says their response to the bug shows the "new and proactive" way the company will handle issues in the future.
Do you ever post things on Facebook you don't want all of your friends to see?