MoCa Ethernet Adapter Security?

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Hi, I just bought an actiontec moca adapter to add into my netgear moca
adapter coax ethernet network.  Alas, it does not support security
preshared key like the netgears do.  So I am thinking of disabling
security on the netgears but would like to get opinions on if this is
advisable or not as I do not know how hackable coax networks are.  TIA, LB

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