The Court of Justice of the European Union (CJEU) issued a judgment on Tuesday 20 September (joined cases C-793/19 and C-794/19) in which it ruled that EU law precludes the general and undifferentiated retention of traffic and location data, except in cases of serious threat to national security.
The CJEU had been consulted by the German Federal Administrative Court, which wanted to know whether EU law precluded national legislation such as the German TKG, which has been in force since...