In fact WiFi never can't be considered a safe connection. There are too many devices around that can disturb the wireless transfer. Especially OSC is prone to damage,m as it is not TCP, but USP based (no retry if an IP package is lost) .
That is why I use LAN cable whenever possible. Of course the CR18 does feature a LAN (RJ45) socket.
If you really need WiFI, you should use a high quality dedicated router (e.g. three antenna) box.
-Michael
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