Is There a Malicious Mail War on a Wind Turbine?

The client was reporting that a dozen of their wind turbines were infected with mailwar. Each of the turbines had their own windows computer connected to it. This computer would monitor the wind speed, production, output and health checks. And as we looked at it, it was pretty clear that there was malicious activity on the systems. It wasn't hurting anything, but it was effectively, you know, early crypto jacking.