Automated systems have succeeded traditional ways of collecting and processing personal data by States. Interoperability as a system of relations between authorities exacerbates the problems of EU, national and global administration’s accountability. The paper goes beyond a discussion of how accountability has evolved for certain distinct actors, for example, Europol, to highlight the fuzziness and disconnection with accountability mechanisms that result from the collection, sharing and use of data both at the European and at the joined-up national level. The point of no return that has allegedly been reached generates significant rule of law challenges. This paper will explore the challenges for those individuals whose rights and interests are affected as they hypothetically navigate a labyrinthine underworld marked by considerable legal uncertainty, wishing to know if and where their data was processed and looking for an effective remedy against a hidden interoperable administration.