High Impact BES Cyber 1.5 Where technically feasible, for An example of evidence may Systems each change that deviates include, but is not limited to, a list of from the existing baseline cyber security controls tested along configuration: with successful test results and a list of differences between the Prior to implementing production and test environments any change in the with descriptions of how any production environment, differences were accounted for, test the changes in a including of the date of the test. test environment or test the changes in a production environment where the test is performed in a manner that minimizes adverse effects, that models the baseline configuration to ensure that required cyber security controls in CIP-005 and CIP-007 are not adversely affected; and Document the results of the testing and, if a test environment was used, the differences between the test environment and the production environment, including a description of the measures used to account for any differences in operation between the test and production environments. Registered Entity Response (Required): Describe, in narrative form, how you meet compliance with this requirement. Registered Entity Evidence (Required): The following information is requested for each document submitted as evidence. Also, evidence submitted should be highlighted and bookmarked, as appropriate, to identify the exact location where evidence of compliance may be found.
1.5 High Impact BES Cyber Systems Where technically feasible, for each change that deviates from the existing baseline configuration: Prior to implementing any change in the production environment, test the changes in a test environment or test the changes in a production environment where the test is performed in a manner that minimizes adverse effects, that models the baseline configuration to ensure that required cyber security controls in CIP-005 and CIP-007 are not adversely affected; and Document the results of the testing and, if a test environment was used, the differences between the test environment and the production environment, including a description of the measures used to account for any differences in operation between the test and production environments. An example of evidence may include, but is not limited to, a list of cyber security controls tested along with successful test results and a list of differences between the production and test environments with descriptions of how any differences were accounted for, including of the date of the test. Registered Entity Response (Required): Describe, in narrative form, how you meet compliance with this requirement. Registered Entity Evidence (Required): The following information is requested for each document submitted as evidence. Also, evidence submitted should be highlighted and bookmarked, as appropriate, to identify the exact location where evidence of compliance may be found.