I have suspicious node in my z-wave network that was not added by me and is not visible in the Z-Wave panel, yet it is present on the neighbours list. There is nothing about this node in my Z-Wave log.
My network is secured:
2018-10-18 08:43:53.154 Always, OpenZwave Version 1.4.3142 Starting Up
2018-10-18 08:44:02.303 Info, Setting Up Provided Network Key for Secure Communications