Well anyone who signs up to Facebook who's not in USA or Canada is technically signing an agreement with Facebook Ireland Ltd. So, the Irish company is responsi

Well anyone who signs up to Facebook who's not in USA or Canada is technically signing an agreement with Facebook Ireland Ltd. So, the Irish company is responsible for the data of hundreds of millions of Facebook users. (cf. section 19 of https://www.facebook.com/legal/terms https://www.facebook.com/legal/terms )