Facebook has been accused of failing to protect sensitive health data of users in its groups.
"Facebook has marketed this product as a Personal Health Record and it then leaked the health data that those patients uploaded to the public," a complaint filed with the Federal Trade Commission (FTC) noted on Monday.
The issue was first noticed in July, when members of a women's group with a gene mutation discovered how easily the names and email addresses of members could have been downloaded in bulk, either manually or through a Chrome extension, The Verge reported.