Hello to all,
What will be the implications of European Cybersecurity resilience act in the Modbus RTU protocol?

 

Most Modbus devices doesn't have any encryption by default since its a simple DATA exchange between 2 devices.
The slave doesn't know who the master is, if a hacker has access to your Modbus network, he can behave like master and gain full control of any of your Modbus slave devices. (Remember STUXNET ??)

If you need more compliant one then switching to OPC UA is the most preferred way in the industry.