This article seeks to provide arguments in support of legislative action on mutual admissibility of evidence and electronic evidence in criminal proceedings at the EU level. To this end, it will first describe the status quo and then the main features of a corresponding proposal recently tabled by the European Law Institute. In the light of this proposal, the author explains why Member States should reconsider their traditional stance against any EU initiative on evidentiary rules in criminal proceedings. Ultimately, especially in this new digital era, the best solution to prevent the inadmissibility of cross-border evidence is to adopt a set of minimum rules.

The intense debate over the past few years on access to data for criminal investigations has led to the adoption of the E-evidence package. Yet, electronic evidence is no less crucial for punitive administrative proceedings. One administrative investigation authority that could benefit from more extensive access to electronic evidence is OLAF, which, at this point, does not seem to have the power to request data from service providers. Such powers could be essential, however, for the detection and investigation of fraud or corruption. This article argues the need for a general and thorough reflection on access to electronic evidence from Internet Service Providers (ISPs) in administrative punitive proceedings. It also discusses the transfer of this type of evidence between administrative and criminal proceedings (in both directions) in order to more specifically justify an extension of OLAF’s powers to be able to request such evidence.