Agreed a minefield - and a basic design flaw with the Hikvision range. They seem to have acknowledged this by adopting a standard very simialr to other network device vendors for their later cameras - use a reset button that requires physical access to the device. Most of the new cameras appear to have this capability, implying they had a change of view on this and closed the gap. What is lacking is a similar feature on the NVRs - this could have easily been provided on the motherboard of these units - requiring opening up - hence physical access.
Hikvision could have added a basic form of validation for devices by requiring the serial number from the sticker on the device - but ironically they reveal that in SADP so doesn't help as it is obtainable electronically and hence a risk.
Other DIY reset processes don't work with an NVR. So basically if you don't know the original installer of an NVR and don't know the password, I guess Hikvision are implying you need to buy the device again and scrap what is likely a perfectly working unit.
Hikvision could have added a basic form of validation for devices by requiring the serial number from the sticker on the device - but ironically they reveal that in SADP so doesn't help as it is obtainable electronically and hence a risk.
Other DIY reset processes don't work with an NVR. So basically if you don't know the original installer of an NVR and don't know the password, I guess Hikvision are implying you need to buy the device again and scrap what is likely a perfectly working unit.