CYBER SECURITY POLICY REVISION: 6

Transcription

1 Section I: General 1. Purpose 1.1 To manage and control the risk to the reliable operation of the Bulk Electric System (BES) located within the service territory footprint of Emera Maine (hereafter referred to as Emera Maine or the Company) from malicious or unintentional attacks on the critical cyber assets used to protect and operate the BES. 1.2 To ensure the continued reliable operations of the interconnected BES, by establishing and maintaining a Cyber Security Management system that prevents a loss of control or protection of the BES, and incorrect operation resulting from security breaches. 1.3 To detail the commitment and ability of Emera Maine management to incorporate and enforce the NERC Critical Infrastructure Protection (CIP) cyber security standards (CIP-002 to CIP-009). 2. Scope 2.1 This Policy establishes the principles to be used by Emera Maine for identifying, managing, and protecting critical cyber asset information, processes and systems owned or developed by Emera Maine. 2.2 This Policy applies to Emera Maine employees, including contract staff and temporary employees, as well as vendors, and other third parties who have authorized electronic or authorized unescorted physical access to critical cyber assets and to Emera Maine employees and vendor/service contractor personnel who do not have authorized access to critical cyber assets but are responsible for actions required to achieve and maintain compliance with Version 3 of NERC Reliability Standards CIP-002 through CIP The definition of terms appearing in italics used in this Policy appears in Attachment A. 2.4 Text contained with [ ] denotes the name of an electronic file documenting an internally developed process for the purpose of complying with a specific NERC CIP requirement or set of requirements. Document No Page 1 of 20 February 14, 2014

2 3. Governing Principles 3.1 Emera Maine shall protect its critical cyber assets, such that, those assets continue to provide correct and reliable control, protection and operation of the power system during periods of normal operation and when subjected to directed intentional cyber attack or unintentional cyber attack. 3.2 Emera Maine shall protect its critical cyber assets when subjected to directed intentional cyber attack, or other emergency situation(s), for which provisional actions are detailed in various Emera Maine Internal Reliability Processes, such as [ doc], [ doc], [ doc] and others as appropriate. 3.3 This Policy shall be reviewed and authorized by the Emera Maine Senior Manager assigned with the overall responsibility for the implementation of and adherence to NERC Standards CIP-002 through CIP-009 on an annual basis and the Company shall retain documentation and records from the previous full calendar year to the present. Section II: Critical Cyber Asset Identification 1. Methodology 1.1 Emera Maine shall develop and document a risk-based methodology that it shall use to identify its Critical Assets. This document [ doc] shall be reviewed and approved annually by Emera Maine s Senior Manager assigned with overall responsibility and authority for leading the Company s implementation to, and adherence to, Standards CIP-002 through CIP Critical Asset Identification 2.1 Annually Emera Maine shall develop a list of all BES critical assets comprising its power system identified through the use the Company s Risk Based Critical Asset and Critical Cyber Asset Identification Methodology [ doc]. 3. Critical Cyber Asset Identification 3.1 Annually Emera Maine shall develop a list of all associated BES critical cyber assets comprising its power system identified through the use the Company s Risk Based Critical Asset and Critical Cyber Asset Identification Methodology [ doc]. Document No Page 2 of 20 February 14, 2014

3 4. Review & Approval 4.1 The lists of Emera Maine BES critical assets and critical cyber assets developed through its annual assessment shall be reviewed and approved by Emera Maine s CIPs Senior Manager or delegate(s) and a signed record of such review. Section III: Security Management Controls 1. Cyber Security Policy 1.1 Emera Maine shall document and implement a Cyber Security Policy [ doc] that represents Emera Maine s commitment and ability to secure its Critical Cyber Assets. 1.2 Emera Maine shall ensure that its Cyber Security Policy is available to all personnel who have access to, or are responsible for, Critical Cyber Assets. 1.3 Emera Maine s Cyber Security Policy shall be reviewed and approved annually by the Company s Senior Manager assigned to lead and manage Emera Maine s implementation and adherence to NERC Reliability Standards CIP-002 through CIP-009 and by Emera Maine s FERC Compliance Officer. 2. Senior Leadership 2.1 Emera Maine shall assign a senior manager with responsibility for leading and managing the entity's implementation and adherence of the NERC CIP-002 thru CIP-009 Standards per its internal reliability process [ doc]. 2.2 Emera Maine shall ensure that the designated senior manager shall be identified by name, title and date of designation. 2.3 Emera Maine shall document changes to the designated senior manager within 30 calendar days of the effective date. 2.4 Emera Maine shall ensure that specific actions (where allowed by Version 3 of Standards CIP-002 through CIP-009) delegated by the senior manager to a named delegate or delegates shall be documented per its reliability process [ doc]. 2.5 Emera Maine s CIPs Senior Manager, or a designated delegate(s), shall be responsible for authorizing and documenting any exception from the requirements of the Company s Cyber Security Policy. Document No Page 3 of 20 February 14, 2014

4 3. Exceptions 3.1 All exceptions to Emera Maine s Cyber Security Policy shall be reviewed, approved and documented per its internal reliability process [ doc] by the Senior Manager (with responsibility for leading and managing the Company s implementation and adherence of the NERC CIP-002 thru CIP-009 Standards) or an authorized delegate to ensure that the intent of this Policy is met. 3.2 Exceptions to the cyber security policy shall be reviewed and approved annually by the senior manager responsible for adherence to NERC Standards CIP-002 to CIP-009 to ensure that any and all past and present day exceptions are still required and valid. 3.3 Documented exceptions to the aforementioned cyber security policy must include an explanation as to why the exception is necessary and any compensating measures. 3.4 Authorized exceptions to the Cyber Security Policy must be reviewed and approved annually by the Emera Maine CIPs Senior Manager or delegate(s) to ensure the exceptions are still required and valid. Such a review and approval shall be documented. 4. Information Protection 4.1 Emera Maine shall document and implement a program to identify, classify, and protect information relating to Critical Cyber Assets [ doc]. 4.2 The Critical Cyber Asset information to be protected shall include, at a minimum, operational procedures, lists as required in Standard CIP-002, network topology or similar diagrams, floor plans of computing centers that contain Critical Cyber Assets, equipment layouts, disaster recovery plans, incident response plans, and security configuration information. 4.3 Classify information related to Critical Cyber Assets based upon sensitivity. 4.4 At least annually, assess adherence to its Critical Cyber Asset information protection program, document the assessment results, and implement an action plan to remediate deficiencies identified during the assessment. Document No Page 4 of 20 February 14, 2014

5 5. Access Control 5.1 Emera Maine shall develop, document and implement a program [ doc] for managing access (both logical and physical) to protected Critical Cyber Asset associated information identified for protection under Emera Maine process [ doc]. 5.2 Emera Maine shall maintain a list of personnel who are responsible for authorizing access (both logical and physical) to protected Critical Cyber Asset information. Personnel comprising this list shall be identified by name, title, business phone and along with a listing of the information for which they are allowed to authorize access to and the list shall be reviewed at least annually to ensure its validity. 5.3 Emera Maine shall review at least annually the access privileges to protected Critical Cyber Asset information to confirm that the access privileges are correct and that they correspond with the Company s needs and the appropriate personnel roles and responsibilities. 5.4 Emera Maine shall review and document at least annually the processes for controlling access privileges to protected information. 6. Change Control & Management 6.1 Emera Maine shall establish and document methods [ doc] and controls governing the modification or replacement of Critical Cyber Asset hardware or software, and implement supporting configuration management activities to identify, control and document all changes to hardware and software components of Critical Cyber Assets. Section IV: Personnel & Training 1. Awareness 1.1 Emera Maine shall establish, maintain and document its security awareness program [ doc] to ensure personnel having authorized cyber or authorized unescorted physical access receive on-going reinforcement in sound security practices. The program shall include security awareness reinforcement on at least a quarterly basis using mechanisms such as: direct communications; indirect communications; and management support. Document No Page 5 of 20 February 14, 2014

6 2. Training 2.1 Emera Maine shall establish, maintain and document a cyber security training program [ doc] and shall ensure that all personnel having authorized access to Critical Cyber Assets, including contractors and service vendors are trained prior to being granted access except in an emergency (as detailed in document [ doc]). 2.2 Emera Maine s training program [ doc] shall cover the policies, access controls and procedures as developed for the Critical Cyber Assets covered by this standard, and include (at a minimum): (1) the proper use of Critical Cyber Assets, (2) physical and electronic access controls to Critical Cyber Assets, (3) the proper handling of Critical Cyber Asset information and (4) action plans and procedures to recover or re-establish Critical Cyber Assets and access thereto following a Cyber Security Incident. 2.3 After initial training of personnel having granted authorized access to Critical Cyber Assets, the Company shall ensure that follow-up training is provided annually to persons with such access and that this activity shall be conducted and documented per its reliability process [ doc]. 2.4 Emera Maine shall ensure that its cyber security training program [ doc] is reviewed at least annually and updated as necessary. 3. Personnel Risk Assessment 3.1 Emera Maine shall develop and document a personnel risk assessment program [ doc], in accordance with federal, state and local laws, and (subject to existing collective bargaining unit agreements), for personnel having authorized cyber or authorized unescorted physical access. 3.2 Emera Maine shall ensure that its personnel risk assessment program [ doc] includes (at a minimum) the following: (1) that risk assessments are conducted prior to such personnel being granted authorized cyber or authorized unescorted physical access to Critical Cyber Assets except in response to an emergency (see [ doc for details]), (2) each assessment conducted shall include (at least) identity verification and a seven year criminal check, and (3) each personnel risk assessment is updated at least every seven years after the initial personnel risk assessment or for cause. Document No Page 6 of 20 February 14, 2014

7 3.3 Emera Maine shall ensure that the results of personnel risk assessments of its personnel having authorized cyber or authorized unescorted physical access to Critical Cyber Assets is documented and that personnel risk assessments of contractor and service vendor personnel with such access are conducted pursuant to Standard CIP Lists, Review & Revocation 4.1 Emera Maine shall maintain lists of personnel with authorized cyber or authorized unescorted physical access to Critical Cyber Assets, including their specific electronic (a.k.a. logical) and physical access rights to Critical Cyber Assets following its internal reliability process [ doc]. 4.2 Emera Maine shall ensure that maintained lists of personnel with authorized cyber or authorized unescorted physical access to Critical Cyber Assets are reviewed quarterly and updated within seven calendar days of any change of personnel with such access to Critical Cyber Assets or any change in the access rights of such personnel. BHE shall ensure access list(s) with names of Emera Maine employees, contractors and service vendors are properly maintained. 4.3 Emera Maine shall revoke authorized cyber or authorized unescorted physical access to Critical Cyber Assets within 24 hours for personnel terminated for cause and within seven calendar days for personnel who no longer require such access to Critical Cyber Assets. Section V: Electronic Security Perimeters 1. Identification 1.1 Emera Maine shall ensure that every Critical Cyber Asset resides within an Electronic Security Perimeter [ doc] and that it shall identify and document the Electronic Security Perimeter(s) and all access points to these perimeter(s). 2. Electronic Access Controls 2.1 Emera Maine shall implement and document organizational processes [ doc] and technical and procedural mechanisms for control of electronic access at all electronic access points to the Electronic Security Perimeter(s). These processes and mechanisms shall use an access control model that denies access by default, such that explicit access permissions must be specified. Document No Page 7 of 20 February 14, 2014

8 2.2 At all access points to the Electronic Security Perimeter(s), Emera Maine shall enable only ports and services required for operations and for monitoring Cyber Assets within the Electronic Security Perimeter, and shall document, individually or by specified grouping, the configuration of those ports and services. 2.3 Emera Maine shall maintain and implement a procedure [ doc] for securing dial-up access to the Electronic Security Perimeter(s) and where external interactive access into the Electronic Security Perimeter has been enabled, Emera Maine shall implement strong procedural or technical controls at the access points to ensure authenticity of the accessing party, where technically feasible. 2.4 Where technically feasible, Emera Maine shall ensure that electronic access control devices display an appropriate use banner upon interactive access attempts and that it shall maintain a document identifying the content of the banner. 3. Monitoring Electronic Access 3.1 Emera Maine shall implement and document an electronic or manual process [ doc] for monitoring and logging access at access points to all Electronic Security Perimeters twenty-four hours a day, seven days a week. 3.2 For dial-up accessible Critical Cyber Assets that use non-routable protocols, Emera Maine shall implement and document a monitoring process at each access point to the dial-up device, where technically feasible. 3.3 Where technically feasible, Emera Maine shall ensure that the security monitoring process detects and alerts for attempts at or actual unauthorized accesses and that these alerts shall provide for appropriate notification to designated response personnel. Where alerting is not technically feasible, Emera Maine shall ensure review or otherwise assess access logs for attempts at or actual unauthorized accesses at least every 90 calendar days. 4. Cyber Vulnerability Assessment 4.1 Emera Maine shall perform a cyber vulnerability assessment of the electronic access points to the Electronic Security Perimeter(s) at least annually [ doc]. The vulnerability assessment shall include (at a minimum): (1) a document identifying the vulnerability assessment process, (2) a review to verify that only ports and services required for operations at these access points are Document No Page 8 of 20 February 14, 2014

9 enabled, (3) the discovery of all access points to the Electronic Security Perimeter(s), (4) a review of controls for default accounts, passwords and network management community strings; and (5) documentation of the results of the assessment, the action plan to remediate or mitigate vulnerabilities identified in the assessment, and the execution status of that action plan. 5. Document Review & Maintenance 5.1 Emera Maine shall review at least annually all Electronic Security Perimeter documentation to ensure that it reflects the current configurations and processes in use and that it shall update the appropriate document to reflect any modification of the network or controls within 90 calendar days of the change. 5.2 Emera Maine shall retain electronic access logs for at least 90 calendar days and logs related to reportable incidents shall be kept for the previous full calendar year, at a minimum. Section VI: Physical Security of Critical Cyber Assets 1. Physical Security Plan 1.1 Emera Maine shall document, maintain and implement a physical security plan [ doc] to restrict physical access to its critical cyber assets. The plan shall ensure all cyber assets within an electronic security perimeter also reside within a defined 6-wall physical security perimeter and, where a 6-wall border can not be established, Emera Maine shall deploy and document alternative measures to control physical access to the Critical Cyber Assets. 1.2 Emera Maine shall also ensure that its Physical Security Plan [ doc] contains the following attributes: a. identification of all access points through each Physical Security Perimeter and measures to control entry at those access points, b. processes and tools to be used to monitor physical access, c. appropriate use of physical access controls, response to loss, and prohibition of inappropriate use of physical access controls, d. review of access authorization requests and revocation of access authorization, and f. requirement for continuous escorted access within the physical security perimeter of personnel not authorized for unescorted access. Document No Page 9 of 20 February 14, 2014

10 1.3. Emera Maine shall implement a visitor control program [ doc] for visitors (personnel without authorized unescorted access to a Physical Security Perimeter) that shall contain logs to document the date and time of entry and exit of visitors to and from Physical Security Perimeters (PSP) and that visitors within a PSP shall be continuously escorted by a person granted authorized unescorted access to the specific PSP. 1.4 Emera Maine shall ensure that its Physical Security Plan shall be updated within 30 days of the completion of any physical security perimeter redesign or reconfiguration, including (but not limited to) addition or removal of access points through the Physical Security Perimeter, physical access controls, monitoring controls, or logging controls. Additionally, at a minimum, this plan shall be reviewed annually by the Company s facilities personnel. 2. Protection of Physical Access Control Systems 2.1. Emera Maine shall ensure that cyber systems that authorize and/or log access to the Physical Security Perimeter(s), exclusive of hardware at the Physical Security Perimeter access point such as electronic lock control mechanisms and badge readers are protected from unauthorized physical access and be afforded the protective measures specified in Standard CIP-003, CIP-004 Requirement R3, CIP-005 Requirement R2 and R3, CIP-006 Requirements R4 and R5, CIP-007, CIP-008 and CIP Protection of Electronic Access Control Systems 3.1. Emera Maine shall ensure that cyber systems used in the access control and/or monitoring of the Electronic Security Perimeter(s) shall reside within an identified Physical Security Perimeter. 4. Physical Access Controls 4.1. Emera Maine shall develop, document and implement the operational and procedural controls [ doc] to manage physical access at all access points to the Physical Security Perimeter(s) twenty-four hours a day seven days a week. 5. Monitoring Physical Access 5.1 Emera Maine shall develop, document and implement the technical and procedural controls [ doc] necessary to monitor physical access at all access points to the Physical Security Perimeter(s) twenty-four hours a day, seven days a week. It shall also ensure that all unauthorized access attempts are reviewed immediately and handled in accordance with the procedures Document No Page 10 of 20 February 14, 2014

11 specified in the Company s Incident Response Plan. 6. Logging Physical Access 6.1 Emera Maine shall record sufficient information to uniquely identify individuals and the time of access twenty-four hours a day seven days a week. 7. Access Log Retention & Review 7.1 Access Log Retention and Review - Retain physical access logs for at least 90 calendar days. Logs related to reportable incidents shall be kept in accordance with its Cyber Incident Response Plan. 8. Maintenance & Testing 8.1 Emera Maine shall implement a maintenance and testing program [ doc] to ensure that all physical security systems implemented to control, monitor and log physical access to Critical Cyber Assets. At a minimum, the Company shall ensure that its maintenance and testing program includes: (1) testing and maintenance of all physical security mechanisms on a cycle no longer than three years, (2) retention of testing and maintenance records and (3) retention of outage records regarding access controls, logging and monitoring for a minimum of one calendar year. Section VII: Systems Security Management 1. Test Procedures 1.1 Emera Maine shall ensure that new Cyber Assets and significant changes to existing Cyber Assets within the Electronic Security Perimeter do not adversely affect existing cyber security controls. 1.2 Emera Maine shall create, implement, and maintain cyber security test procedures [ doc] in a manner that minimizes adverse effects on the production system or its operation and shall document that testing is performed in a manner that reflects the production environment. 2. Ports & Services 2.1 Emera Maine shall establish, document and implement a process [ doc] to ensure that only those ports and services required for normal and emergency operations are enabled and shall disable other ports and services (including those used for testing purposes) prior to production use of all Cyber Assets inside the Electronic Security Perimeter(s). In the case where unused ports and Document No Page 11 of 20 February 14, 2014

12 services cannot be disabled due to technical limitations, Emera Maine shall document compensating measure(s) applied to mitigate risk exposure. 3. Security Patch Management 3.1 Emera Maine shall establish, document and implement a security patch management program [ doc] for tracking, evaluating, testing, and installing applicable cyber security software patches for all Cyber Assets within the Electronic Security Perimeter(s). 3.2 Emera Maine shall document the assessment of security patches and security upgrades for applicability within 30 calendar days of their availability to the Company. 3.3 Emera Maine shall document the implementation of patches and, in any case where a patch was not installed, it shall document compensating measure(s) applied to mitigate risk exposure. 4. Malicious Software Prevention 4.1 Emera Maine shall use anti-virus software or other malicious software (malware) prevention tolls, where technically feasible, to detect, prevent, deter, and mitigate the introduction, exposure, and propagation of malware on all Cyber Assets within the Electronic Security Perimeters [ doc]. 4.2 Emera Maine shall document the use of such anti-virus and malware prevention tools and, in the case where anti-virus software and malware prevention tools are not applied, BHE shall document compensating measure(s) applied to mitigate risk exposure or an acceptance of risk. 4.3 Emera Maine shall document and implement a process for the update of antivirus and malware prevention "signature". 5. Account Management 5.1 Emera Maine shall establish, implement and document technical and procedural controls that enforce access authentication of, and accountability for, all user activity, and that minimize the risk of unauthorized system access [ doc]. 5.2 Emera Maine shall ensure that individual and shared accounts and authorized access permissions are consistent with the concept of need to know with respect to work functions performed. Document No Page 12 of 20 February 14, 2014

13 5.3 Emera Maine shall implement a policy to minimize and manage the scope and acceptable use of administrator, shared, and other generic account privileges including factory default accounts. 5.4 At a minimum, Emera Maine shall use passwords to manage accounts and ensure access authenticity. 6. Security Status Monitoring 6.1 Emera Maine shall develop, document and deploy organizational processes [ doc] and the technical and procedural mechanisms necessary to monitor and detect security events on all cyber assets within the Electronic Security Perimeter. Such mechanisms shall alert appropriate staff of detected cyber security incidents in a timely manner so their impact may be assessed and the appropriate response action implemented. 6.2 Emera Maine shall maintain logs of detected system events related to cyber security, where technically feasible, to support incident response. These logs shall be retained for at least 90 calendar days and the Company shall maintain records documenting review of these event logs. 7. Disposal & Redeployment 7.1 Emera Maine shall establish and implement formal methods, processes, and procedures [ doc] for the disposal or redeployment of Critical Cyber Assets within its Electronic Security Perimeter(s). It shall ensure that prior to the disposal of such assets that it shall destroy or erase the data storage media to prevent unauthorized retrieval of sensitive cyber security or reliability data and prior to the redeployment of such assets, (at a minimum) it shall erase the data storage media prior to prevent unauthorized retrieval of sensitive cyber security or reliability data. 7.2 Emera Maine shall maintain records that such assets were disposed of or redeployed in accordance with its documented procedures. 8. Cyber Vulnerability Assessment 8.1 Emera Maine shall ensure that a Cyber Vulnerability Assessment of the Cyber Assets within the Electronic Security Perimeter is performed at least annually [ doc]. At a minimum, the Company shall ensure that this vulnerability assessment shall include (at a minimum) the following: a. a document identifying the vulnerability assessment process; b. a review to verify that only ports and services required for operation of Document No Page 13 of 20 February 14, 2014

14 Cyber Assets within the Electronic Security Perimeter are enabled; c. a review of controls for default accounts; and d. documentation of the results of the assessment, the action plan to remediate or mitigate vulnerabilities identified in the assessment, and the execution status of that action plan. 9. Documentation & Review 9.1 Emera Maine shall ensure that all System Security Management documents are reviewed and update at least annually and that changes resulting from modifications to the system or its controls shall be documented within 30 calendar days of the change being completed. Section VIII: Incident Reporting & Response Planning 1. Cyber Security Incident Response Plan 1.1 Emera Maine shall develop and maintain a Cyber Security Incident Response Plan [ doc] and implement the plan in response to Cyber Security Incidents. The Company s Cyber Security Incident Response Plan shall address, at a minimum: Procedures to characterize and classify events as reportable Cyber Security Incidents; Response actions to Cyber Security Incidents; Process for reporting Cyber Security Incidents to the Electricity Sector Information Sharing and Analysis Center (ES-ISAC). Process for updating the Cyber Security Incident Response Plan within 30 calendar days of any changes; Process for ensuring that the Cyber Security Incident Response Plan is reviewed at least annually, and Process for ensuring that the Cyber Security Incident response Plan is tested at least annually. 2. Cyber Incident Documentation 2.1 Emera Maine shall keep relevant documentation related to reportable Cyber Security Incidents for three calendar years. Document No Page 14 of 20 February 14, 2014

15 Section IX: Recovery Plans 1. Creation & Review 1.1 Emera Maine shall develop and document recovery plans for its critical cyber assets so that essential functions are reestablished within an acceptable period of time following an emergency or other unexpected event. These recovery plans shall define the roles and specify the required actions of responders in response to events or conditions of varying duration and severity that would activate the recovery plans [ doc]. Further, Emera Maine shall ensure that during these events access (both physical and/or electronic) to Critical Cyber Assets from outside established electronic and/or physical perimeters are denied until service is reestablished or controlled using an acceptable alternative method. 1.2 Emera Maine shall ensure that these recovery plans are reviewed at least annually. 2. Exercises 2.1 Emera Maine shall ensure that recovery plans are exercised at least annually. 3. Change Control 3.1 Emera Maine shall ensure that recovery plans [ doc] shall be updated to reflect changes or lessons learned as a result of an exercise or recovery from an actual incident and that any and all updates shall be communicated to personnel responsible for the activation and implementation of the recovery plan within 30 calendar days of the change being completed. 4. Backup & Restore 4.1 Emera Maine shall develop and implement a recovery plan [ doc] that shall include processes and procedures for the backup and secure storage of information required to successfully restore Critical Cyber Assets. 5. Testing Backup Media 5.1 Emera Maine shall ensure that information essential to recovery that is stored on backup media is tested at least annually to ensure that the information is available. Document No Page 15 of 20 February 14, 2014

16 Section X: Definitions The definitions provided in this section are used by the NERC CIP Standards and are included in the NERC Glossary of Terms for Reliability Standards. Annually: Once each calendar year. Critical Assets: Facilities, systems and equipment which, if destroyed, degraded, or otherwise rendered unavailable, would affect the reliability or operability of the Bulk Electric System. Cyber Assets: Programmable electronic devices and communication networks including hardware, software, and data. Critical Cyber Assets: Cyber assets essential to the reliable operation of critical assets. Cyber Security Incident: Any malicious act or suspicious event that: Compromises, or was an attempt to compromise, the electronic security perimeter or physical security perimeter of a critical cyber asset, or, Disrupts, or was an attempt to disrupt, the operation of a critical cyber asset. Electronic Security Perimeter: The logical border surrounding a network to which critical cyber assets are connected and for which access is controlled. Electronic Security Perimeter: The logical border surrounding a network to which critical cyber assets are connected and for which access is controlled. Physical Security Perimeter: The physical, completely enclosed ( six-wall ) border surrounding computer rooms, telecommunications rooms, operations centers, and other locations in which critical cyber assets are housed, and for which access is controlled. Document No Page 16 of 20 February 14, 2014

17 Related Documents: o o o o o o o o o o o o o o o o o o o o o o o Critical Cyber Asset Identification Cyber Security Policy & Exceptions Leadership Assignment & Authority Delegation Information Protection Access Control to Protected Information Change Control & Configuration Management Security Awareness Reinforcement & Training Personal Risk Assessments Access Control to Critical Cyber Assets Electronic Security Perimeters Cyber Security Vulnerability Assessment Physical Security Perimeters Physical Security System Maintenance & Testing Test Procedures Ports & Services Security Patch Management Malicious Software Prevention Account Management Security Status Monitoring Disposal & Redeployment Incident Reporting & Response Planning Recovery Plans for Critical Cyber Assets Cyber Security Incident Response Plan Document No Page 17 of 20 February 14, 2014

18 Version History Version Action Date 1 Original June 29, Corrected document references Section I item 3.2 July 9, 2009 Added language Section IX item 1.1 further specifying Emera Maine actions regarding access to CCAs during emergencies. Added document to Related Document List 3 Change 2.2 to define applicability of policy to Emera Maine and non-emera Maine personnel. December 30, 2009 Define the term annually as meaning once each calendar year Clarification of commitment and ability of Emera Maine to protect Critical Cyber Assets during emergency situations. Minor grammatical edits Classification level changed from Proprietary to Unrestricted Signatory page changes 4 Signatory page change, Gerry Chasse appointed as BHE new President & COO February 23, 2010 Incorporate Version 3 changes into policy as appropriate Change all references of BHEC to Emera Document No Page 18 of 20 February 14, 2014

19 Maine 5 Change various references of Version 2 to Version 3 October 25, 2010 Added Visitor Control program to Physical Security Perimeter Plan (Section VI) per new requirement of CIP Added Matt Allen to signatory page and corrected name of Company s President to full name 6 Changed all references from Bangor Hydro to Emera Maine February 14, 2014 Updated titles on Signatory Page Document No Page 19 of 20 February 14, 2014

20 Approvals - Signatures APPROVED: Date: Matt Allen Compliance, Security & Environmental Supervisor Emera Maine APPROVED: Date: Kim Wadleigh Vice President, T & D Operations Emera Maine APPROVED: Date: Karen Redford VP, Corporate & Legal Affairs (FERC Compliance Officer) Emera Maine APPROVED: Date: Gerard R. Chasse President and Chief Operating Officer Emera Maine Document No Page 20 of 20 February 14, 2014