Previously identified devices keep reappearing as unknown.

[Helman63]

I've searched around for a couple of days and can't seem to find a matching issue.  Kaspersky checks for devices on my LAN... great idea.  Unfortunately the past couple of months it keeps re-identifying the same devices as being unknown and warning me about them.  Every time this happens, I check and confirm if the device is one of mine or not.  If they are, I update Kaspersky with the device name and type, yet the same devices are identified some random time down the track.

Speaking of device types.  Kaspersky has a very limited number of device types.  It would probably be a good idea to expand that list.  Have a look at Fing application for inspiration.