Securing SCADA is a tough job when it has to be performed practically; however, we can look for some of the following key points when securing SCADA systems:
- Keep an eye on every connection to the SCADA network and check if any unauthorized attempts were made
- Make sure all the network connections are disconnected when they are not required
- Implement all the security features provided by the system vendors
- Implement IDPS technologies for both internal and external systems and apply incident monitoring for 24 hours
- Document all the network infrastructure and define individual roles to administrators and editors
- Establish IR teams and blue teams for identifying attack vectors on a regular basis
