In this paper I propose to analyse the binary notion of personal data and highlight its limits, in order to propose a different conception of personal data. From a risk regulation perspective, the binary notion of personal data is not particularly fit for purpose, considering that data collection and information flows are tremendously big and complex. As a result, the use of a binary system to determine the applicability of EU data protection law may be a simplistic approach. In an effort of bringing physics and law together, certain principles elaborated within the quantum theory are surprisingly applicable to data protection law, and can be used as guidance to shed light on many of today’s data complexities. Lastly, I will discuss the implications and the effects that certain processing operations may have on the possibility of qualifying certain data as personal. In other terms, how the chances to identify certain data as personal is dependent upon the processing operations that a data controller might put in place.

The sharp increase of piracy attacks in the last two decades was followed by a parallel increase of demand in the maritime security sector. A plenty of flag States around the world have started to authorize the deployment of armed security guards, either military or private, aboard commercial ships. In 2011, Italy also introduced the possibility of embarking armed security services to protect Italian flagged ships sailing in dangerous international waters. Like the other flag States’ legal systems, the newly adopted Italian legislation aims to preserve the domestic shipping industry which was particularly disrupted by modern-day pirates. On the other hand, the doubling of approaches of the Italian legal and regulatory framework, initially privileging military personnel and then opting for the private solution, took the author to investigate the main relevant features of the Italian model of regulation and to analyze the recent developments of the domestic legal practice on counterpiracy armed security services, focusing on the role that customary and treaty obligations of international law played for the realization at national level of on-board armed protection of Italian ships. The use of lethal force at sea and the relationship between the shipmaster and the security guards will receive specific attention in this article.