There may have been effort to stop it from happening again, but from the outside it seems there has been zero effort to mitigate the harm already done, I don't

There may have been effort to stop it from happening again, but from the outside it seems there has been zero effort to mitigate the harm already done, I don't think Facebook contacted anyone to tell them their very personal data had been downloaded by a third party because one of their Facebook friend participated in some poll, and that they would now be targeted by very personalized political propaganda . It was swept under the rug.