Overview
Developing secure Industrial Control Systems (ICS) is challenging for any Industry Infrastructure. The software platform offers features, tools, and configurations to help the NERC-CIP security compliance.
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Industrial Controls Systems and Security Standards
As Industrial Control Systems (ICS) move away from proprietary technologies and towards more standardized and open solutions, along with the growing number of connections between SCADA systems and office networks, Internet access increases the risk of cyber attacks.
There are many resources available now to help critical infrastructure SCADA systems enhance their security. For example, the standard ISA99 – Industrial Automation and Control Systems Security, establishes best practices, technical reports, and related information to define procedures for implementing and assessing electronically secure systems. Compliance with this standard can improve manufacturing and control system electronic security, help identify and address vulnerabilities, and reduce the risk of compromised confidential information and system degradation.
Additionally, government regulations are evolving to secure critical infrastructure industries. The North American Electric Reliability Corporation (NERC) – Critical Infrastructure Protection (CIP) standard, known as NERC-CIP, represents a significant effort in influencing government policy.
This standard has its roots in the Electricity Modernization Act – which is part of the US Energy Policy Act of 2005. Within the Energy Policy Act of 2005, there is a section which dictates that the NERC-CIP standard requires all power plants and electric utility facilities to develop new cyber security systems and procedures in accordance with a 3-year implementation plan.
NERC-CIP Requirements References
NERC Standards CIP-002 through CIP-009 provide a cyber security framework for the identification and protection of Critical Cyber Assets to support reliable operation of the Bulk Electric System.
There are eight different CIP standards covering everything from Security Management Control and Critical Cyber Assets, to Incident Reporting and Recovery Plans. Each one of the eight standards defines a series of specific requirements. The standards are:
NERC-CIP Standard | Requirement | Description |
CIP-002-1: Critical Cyber Asset Identification Requires identifying and documenting Critical Cyber Assets essential for the Bulk Electric System's operation. | R1. Critical Asset Identification Method | Develop and document a methodology based on risk assessment to identify Critical Assets. |
R2. Critical Asset Identification | Create and annually update a list of Critical Assets, derived using the risk assessment method from R1, with regular reviews and necessary updates. | |
R3. Critical Cyber Asset Identification | Based on the Critical Assets list from R2, compile a list of Critical Cyber Assets vital for the functioning of each Critical Asset. | |
CIP-003-1: Security Management Controls Requires Responsible Entities to implement security controls to protect Critical Cyber Assets. | R1. Cyber Security Policy | Create and enforce a cyber security policy that reflects the organization's commitment to securing Critical Cyber Assets. |
R2. Leadership | Appoint a senior manager to oversee and ensure compliance with Standards CIP-002 to CIP-009. | |
R3. Exceptions | Record any deviations from the cyber security policy as exceptions, with authorization from a senior manager or their delegate. | |
R4. Information Protection | Establish a program to identify, categorize, and safeguard information linked to Critical Cyber Assets. | |
R5. Access Control | Develop and implement a program to control access to information associated with Critical Cyber Assets. | |
R6. Change Control and Configuration Management | Set up and document a process for change control and configuration management, addressing all changes to hardware and software of Critical Cyber Assets, in line with the established change control procedures. | |
CIP-004-1: Personnel and Training Requires personnel with access to Critical Cyber Assets, including contractors, to undergo risk assessment, training, and security awareness. | R1. Awareness | Develop, document, and maintain a program to continually enhance the security awareness of personnel with authorized access to Critical Cyber Assets. |
R2. Training | Implement and document an annual training program on cyber security for staff with authorized access to Critical Cyber Assets, reviewing and updating it as needed. | |
R3. Personnel Risk Assessment | Maintain a documented program to assess the risk posed by personnel with authorized access, in compliance with relevant legal and union agreements. | |
R4. Access | Keep updated lists of individuals with authorized access to Critical Cyber Assets, including details of their specific electronic and physical access privileges. | |
CIP-005-1: Electronic Security Perimeter Requires protecting Electronic Security Perimeters and their access points where Critical Cyber Assets are located. | R1. Electronic Security Perimeter | The Responsible Entity shall ensure that every Critical Cyber Asset resides within an Electronic Security Perimeter. |
R2. Electronic Access Controls | The Responsible Entity shall implement and document the organizational processes and technical and procedural mechanisms for control of electronic access at all electronic access points to the Electronic Security Perimeter(s). | |
R3. Monitoring Electronic Access | The Responsible Entity shall implement and document an electronic or manual process(es) for monitoring and logging access at access points to the Electronic Security Perimeter(s) twenty-four hours a day, seven days a week. | |
R4. Cyber Vulnerability Assessment | The Responsible Entity shall perform a cyber vulnerability assessment of the electronic access points to the Electronic Security Perimeter(s) at least annually. | |
R5. Documentation Review and Maintenance | The Responsible Entity shall review, update, and maintain all documentation to support compliance with the requirements of Standard CIP-005. | |
CIP-006-1: Physical Security of Critical Cyber Assets Requires establishing a physical security program for Critical Cyber Assets. | R1. Physical Security Plan | Create and regularly update a physical security plan, ensuring senior management approval and addressing key security aspects. |
R2. Physical Access Controls | Document and enforce operational controls to manage physical access at every entry point to secure areas, ensuring 24/7 operation. | |
R3. Monitoring Physical Access | Monitor all access points to secure areas round the clock, promptly reviewing and managing any unauthorized access attempts. | |
R4. Logging Physical Access | Log every instance of physical access, including unauthorized attempts, and monitor them consistently, following specified breach protocols. | |
R5. Access Log Retention | Retain all physical access logs for at least 90 days, and preserve logs concerning major incidents as per Standard CIP-008 requirements. | |
R6. Maintenance and Testing | Conduct regular maintenance and testing of all physical security systems, especially those related to access control, monitoring, and logging, to ensure their functionality. | |
CIP-007-1: Systems Security Management Requires defining security procedures for Critical and non-critical Cyber Assets within Electronic Security Perimeters. | R1. Test Procedures | Ensure new and modified Cyber Assets within the Electronic Security Perimeter don't compromise existing cybersecurity controls. |
R2. Ports and Services | Develop and maintain a process to enable only essential ports and services for normal and emergency operations. | |
R3. Security Patch Management | Establish a program for managing cybersecurity software patches, covering tracking, evaluating, testing, and installing patches for all Cyber Assets. | |
R4. Malicious Software Prevention | Implement anti-virus and malware prevention tools to protect all Cyber Assets within the Electronic Security Perimeter, where possible. | |
R5. Account Management | Set up technical and procedural controls for user access authentication and accountability, minimizing unauthorized access risks. | |
R6. Security Status Monitoring | Utilize automated tools or organizational processes to monitor cybersecurity-related system events for all Cyber Assets. | |
R7. Disposal or Redeployment | Define formal methods for the disposal or redeployment of Cyber Assets within the Electronic Security Perimeter, as per CIP-005 standards. | |
R8. Cyber Vulnerability Assessment | Conduct an annual cyber vulnerability assessment for all Cyber Assets within the Electronic Security Perimeter. | |
R9. Documentation Review and Maintenance | Regularly review and update cybersecurity documentation annually, documenting any system or control modifications within 90 days. | |
CIP-008-1: Incident Reporting and Response Planning Requires managing Cyber Security Incidents involving Critical Cyber Assets, including identification, classification, response, and reporting. | R1. Cyber Security Incident Response Plan | Create and regularly update a plan to respond to cyber security incidents, ensuring it covers essential response strategies and procedures. |
R2. Cyber Security Incident Documentation | Maintain detailed records of all cyber security incidents for a period of three years. | |
CIP-009-1: Recovery Plans for Critical Cyber Assets Requires recovery plans for Critical Cyber Assets aligned with business continuity and disaster recovery practices. | R1. Recovery Plans | Develop and conduct annual reviews of recovery plans for Critical Cyber Assets, ensuring they address key recovery strategies. |
R2. Exercises | Perform at least one exercise each year to test the recovery plans, ranging from simple drills to full operational tests or actual incident recoveries. | |
R3. Change Control | Revise recovery plans to reflect any new changes or insights gained from exercises or actual incident recoveries, and communicate these updates to relevant personnel within 90 days. | |
R4. Backup and Restore | Ensure recovery plans contain detailed processes for backing up and storing information critical for restoring Critical Cyber Assets, including spare parts, configuration settings, and tape backups. | |
R5. Testing Backup Media | Annually test backup media containing essential recovery information to verify its availability and effectiveness, with the option to perform tests offsite. |
Security Measures For NERC-CIP Compliance
Several features can be enabled or configured on the software platform to help achieve better system security. The basic procedures are:
Enable software platform domain user control with Windows Active Directory;
The software platform is CFR 21 Part11 compliant. All features described in this rule must be enabled/configured.
Enable (Native TCP/IP protocol) communication compression;
Enable Solution Cryptography (password protection);
Enable Tracing options;
Working alongside software platform, data can be stored using compression and cryptography techniques inside Microsoft SQL, avoiding data replacement.
Integration with other tools to provide auto backup and disaster recovery tools can also be used;
Choose a tested/certified Anti-Virus and system environment application control.
User Access
Integration with Microsoft Active Directory
If AD integration is disabled, the software platform Domain offers:
Strong Passwords;
Password expiration control;
Inactivity auto-logoff;
Block/Unblock login after a sequence of wrong tries.
Access Control
Internal control and assignment of permissions (Displays, Alarms, Server Actions).
User Administration features.
Electronic Security Perimeter
Port data paths configurable.
Integration with third-party security systems (IDS/ICS) regard Intrusion Detection and Control Systems.
Logging of Access and Usage
Electronic Signatures;
Built-in Tracking and Event Monitoring;
Audit Trail Database;
User-Defined Log Entries for specific actions or unactions.
Workforce Management
User rights revocable by Administrator or through Microsoft Active Directory.
Security Software Management
Solution cryptography;
Native features for solution management like Application Control and Policy Orchestrator.
Alerts and Notifications
Log and Trace of any kind of access and actions;
Can send notifications in forms, like SMS, Email, SNMP, WebServices, other protocol messages, etc.
Recovery Plans
Auto-Backup, native versioning solution;
Use Server redundancy (hot – standby);
Usage of RAID disks.