The CJEU will hear arguments from Belgium's DPA on Monday in a case involving Facebook. The DPA is attempting to stop Facebook from tracking citizens through cookies stored on social plug-ins. Under the GDPR's one-stop-shop mechanism, the lead regulator for Facebook would be Ireland's DPC. "The question is whether or not the one-stop-shop mechanism under the GDPR is exhaustive or leaves some room for local DPAs such as the Belgian DPA to enforce, in particular by bringing court proceedings before a national judge," said Aurélie Waeterinckx, a spokeswoman for the Belgian DPA.
Update: Facebook’s lawyer argues for the merits of the one-stop-shop mechanism as the two square off over who should police company.