The original list of hundreds under investigation has now grown to “tens of thousands”. Facebook reports the apps were created by about 400 developers which may have mishandled users’ personal data in connection with Cambridge Analytica. Facebook has suspended all apps associated with the investigation.
There is still a lot of ambiguity as to the level of exposure to personal data and the infractions. The 18-month old investigation is still underway.
For more information, check out the Facebook blog article.