HELP! Lots of Hikvision NVR remote logins (illegal and remote) from outside my network!

That would explain why my HikConnect app no longer works when I changed it. But I still don't get how it was accessable from the outside when I don't have any routes for 8000?

You have to go into the HikConnect app and change the port in there as well. It's still on 8000. Change it to the new port you assigned on your NVR.
 
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Same strange thing here.. Upnp disabled on both cam and modem. I searched google for that ip adress, as result:
CO CIE BOLI, ZE RYCHU PEJA MA SZANSE UCZCIWIE ZAROBIC?
Hik connect is enabled, but not registred at platform