135Disaster Recovery andBusiness Continuity of SCADA
PLAN MAINTENANCE
To be effective, the plan must be maintained in a ready state that accurately reects
system requirements, procedures, organizational structure, and policies. Information
systems undergo frequent changes because of shifting business needs, technology
upgrades, or new internal or external policies. Therefore, it is essential that continuity
plans be reviewed and updated regularly as part of the organization’s change manage-
ment process to ensure that new information is documented and contingency measures
are revised if required. A continuous monitoring process can provide organizations
with an effective tool for plan maintenance, producing ongoing updates to security
plans, ...