Comment by eivarv

It has been illegal at least since the Grand Chamber judgments on the cases of "Big Brother Watch" and "Centrum för Rättvisa" last year [0]. Though, really, the outcome was fairly predictable for anyone following the field.

TLDR; Continuous "General and indiscriminate retention" is not compatible with EU fundamental rights.

[0]: https://europeanlawblog.eu/2021/06/08/big-brother-watch-and-...