A plan to ramp up the data processing powers of the EU’s policing agency Europol poses “serious risks” to people’s privacy, Europe’s data protection supervisor warned Thursday.

The European Commission in June unveiled a plan to make Europol the central system for police forces to trade and analyse data using the latest technologies — part of a wider strategy to give EU justice agencies more firepower to tackle cross-border crime and terrorism.

The reforms include a fundamental shift in how Europol sifts through the data it collects, relaxing current rules that require data to be sorted into different categories before determining if Europol can legally use it. That’s been a “key operational bottleneck,” the Commission has said, since Europol deals with high volumes of unstructured data.