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VIRUS and DCS
Can a virus through 4-20 ma to ethernet converter into DCS?

Dear All,

I want to send a signal 4-20 ma from DCS through a converter (4-20 ma to ethernet) to the internet network and then from a PLC that is connected to internet i will get it.

Is it possible that a virus can spread through internet to converter and then to PLC? I mean if virus can only spread through ethernet or it can also goes through 4-20 ma siganl and finally to DCS? in terms of risk and security of such action for DCS.