Well does that work through a NAT? I doubt it. Polizei need to get into the private subnet first at least, which requires either cracking a Wi-Fi or plugging themselves into an Ethernet cable, which means they need a van at least. What says you?
Germany will probably go to antivirus companies and tell them to not do anything about their trojan. We'll probably also see adverts about how such programs are bad for you and maybe even blocking such sites in the country. UK is known for stupid adverts about the internet and things like crypto and VPN's.What happens if your antivirus removes the trojan? Does Malwarebytes go to digijail?
And even then there is just shit you can't reliably detect without getting tons of false positives. Keyloggers, polymorphic viruses, self-compiling encrypted programs, a lot of stuff uses things that legitimate software does or stuff that is just outright undetectable.Antivirus software is absolutely useless against targeted attacks (and have questionable use in general).
They can only detect malware that has already been in the wild for a while, found, and analyzed.