“Or, more concretely, if your computer gets hacked by group X and there was a warrant to intercept the traffic of group X, the Dutch services now gain automatic approval to also intercept your communications or hack you.”
Today a Dutch warrant against a non-target needs a heightened proportionality test and sign-off from the TIB regulator in advance. The proposed lex specialis extends it administratively to any machine the hackers “took into use,” with no internal or external approval. The CTIVD only gets notified afterwards. Get hacked once and the state treats you as a free extension of the warrant.