https://www.cnbc.com/2018/04/26/facebook-warns-investors-that-more-cambridge-analyticas-are-likely.html

Buried on page 46 of Facebook's quarterly report, deep in the risk factors section, is an ominous warning to investors: Cambridge Analytica is probably not alone.

"We anticipate that we will discover and announce additional incidents of misuse of user data or other undesirable activity by third parties," Facebook said in the filing published on Thursday. "We may also be notified of such incidents or activity via the media or other third parties."