Abstract
The ruling of the Grand Chamber of the Court of Justice of the EU (CJEU) in Case C-670/22 Staatsanwaltschaft Berlin v. M.N. addresses the realities of data-driven police investigations in the light of the Directive 2014/41/EU on the European Investigation Order (EIO Directive). In particular, it examines the cross-border, digital investigation of the encrypted communication network EncroChat and the use and sharing of intercepted telecommunication data in criminal proceedings. In doing so, the CJEU offers clarifications as to the interpretation of the term ‘issuing authority’ under the EIO Directive and the proportionality requirements for issuing an EIO, taking into account its prior jurisprudence on the implications of access to traffic and location data for the private life of the persons concerned. More importantly, this CJEU ruling takes a stand on admissibility of intercepted data as evidence in criminal proceedings, considering the technical complexity of contemporary investigation measures and the secrecy of said police methods. Overall, although this judgment seems to hold no great surprises regarding the interpretation of the EIO Directive's provisions, it underscores the important role of the national legislator and national courts in striking the right balance between rearing the rewards of data-driven policing and safeguarding defence rights.
Published Version
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