SCADA experts demonstrated just how easy it is to commandeer the antiquated networking protocols used in an oil-well pumping station and other SCADA environments. The attack could cause a “complete environmental catastrophe” in a real drilling environment, experts say. The lack of security in the serial Modbus/TCP protocol dates back to the 1970s and operates on port 502. Preventing attacks on these systems would require command-level filtering for the PLCs, they say. “There is no authentication or security at all designed into it,” Forner says.”]
Source: https://www.darkreading.com/attacks-breaches/scada-experts-simulate-catastrophic-attack