A class action lawsuit has been filed against Costco Wholesale Corporation (COST) in the Federal District Court for the Western District of Washington State.  Plaintiffs allege that Costco disclosed private health information to Facebook using the Meta Pixel platform. This resulted in affected Costco customers receiving unsolicited and directed E-mail advertisements relating to their medical conditions. 

Costco has not issued any statement relating to the allegations, that if valid, represent an egregious breach of confidence.