Level 1 is where all the controlling equipment lives. The main purpose of the devices in this level is to open valves, move actuators, start motors, and so on. Typically found in level 1 are PLCs, Variable Frequency Drives (VFDs), dedicated proportional-integral-derivative (PID) controllers, and so on. Although you could find a PLC in level 2, its function there is of supervisory nature instead of controlling.
- Preface
- Industrial Control Systems
- Insecure by Inheritance
- Anatomy of an ICS Attack Scenario
- Industrial Control System Risk Assessment
- The Purdue Model and a Converged Plantwide Ethernet
- The Defense-in-depth Model
- Physical ICS Security
- ICS Network Security
- Designing network architectures for security
- Network segmentation
- Resiliency and redundancy
- Architectural overview
- Firewalls
- Security monitoring and logging
- Network packet capturing
- Event logging
- Security information and event management
- Summary
- Designing network architectures for security
- ICS Computer Security
- ICS Application Security
- ICS Device Security
- The ICS Cybersecurity Program Development Process
- The NIST Guide to Industrial control systems security
- The ICS security program development process
- Security policies, standards, guidelines, and procedures
- Defining ICS-specific security policies, standards, and procedures
- Defining and inventorying the ICS assets
- Performing an initial risk assessment on discovered ICS assets
- Defining and prioritizing mitigation activities
- Defining and kicking off the security improvement cycle
- Summary
Level 1 - Basic control
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