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(ISC)2 CISSP Certified Information Systems Security Professional Official Study Guide. Mike Chapple
Читать онлайн.Название (ISC)2 CISSP Certified Information Systems Security Professional Official Study Guide
Год выпуска 0
isbn 9781119786245
Автор произведения Mike Chapple
Жанр Зарубежная компьютерная литература
Издательство John Wiley & Sons Limited
Chapter 3 Business Continuity Planning
THE CISSP EXAM TOPICS COVERED IN THIS CHAPTER INCLUDE:
Domain 1.0: Security and Risk Management1.8 Identify, analyze, and prioritize Business Continuity (BC) requirements1.8.1 Business Impact Analysis (BIA)1.8.2 Develop and document scope and plan
Domain 7.0: Security Operations7.13 Participate in Business Continuity (BC) planning and exercises
Despite our best intentions, disasters of one form or another eventually strike every organization. Whether it's a natural disaster such as a hurricane, earthquake, or pandemic, or a person-made calamity such as a building fire, burst water pipe, or economic crisis, every organization will encounter events that threaten their operations or even their very existence.
Resilient organizations have plans and procedures in place to help mitigate the effects a disaster has on their continuing operations and to speed the return to normal operations. Recognizing the importance of planning for business continuity (BC) and disaster recovery (DR), the International Information System Security Certification Consortium (ISC)2 included these two processes in the objectives for the CISSP program. Knowledge of these fundamental topics will help you prepare for the exam and help you prepare your organization for the unexpected.
In this chapter, we'll explore the concepts behind business continuity planning (BCP). Chapter 18, “Disaster Recovery Planning,” will continue the discussion and delve into the specifics of the technical controls that organizations can put in place to restore operations as quickly as possible after disaster strikes.
Planning for Business Continuity
Business continuity planning (BCP) involves assessing the risks to organizational processes and creating policies, plans, and procedures to minimize the impact those risks might have on the organization if they were to occur. BCP is used to maintain the continuous operation of a business in the event of an emergency. The goal of BCP planners is to implement a combination of policies, procedures, and processes such that a potentially disruptive event has as little impact on the business as possible.
BCP focuses on maintaining business operations with reduced or restricted infrastructure capabilities or resources. As long as the continuity of the organization's ability to perform its mission-critical work tasks is maintained, BCP can be used to manage and restore the environment.
Business Continuity Planning vs. Disaster Recovery Planning
CISSP candidates often become confused about the difference between business continuity planning (BCP) and disaster recovery planning (DRP). They might try to sequence them in a particular order or draw firm lines between the two activities. The reality of the situation is that these lines are blurry in real life and don't lend themselves to neat and clean categorization.
The distinction between the two is one of perspective. Both activities help prepare an organization for a disaster. They intend to keep operations running continuously, when possible, and recover functions as quickly as possible if a disruption occurs. The perspective difference is that business continuity activities are typically strategically focused at a high level and center themselves on business processes and operations. Disaster recovery plans tend to be more tactical and describe technical activities such as recovery sites, backups, and fault tolerance.
In any event, don't get hung up on the difference between the two. We've yet to see an exam question force anyone to draw a solid line between the two activities. It's much more important that you understand the processes and technologies involved in these two related disciplines.
You'll learn more about disaster recovery planning in Chapter 18.
The overall goal of BCP is to provide a quick, calm, and efficient response in the event of an emergency and to enhance a company's ability to recover from a disruptive event promptly. The BCP process has four main steps:
Project scope and planning
Business impact analysis
Continuity planning
Approval and implementation
The next four sections of this chapter cover each of these phases in detail. The last portion of this chapter will introduce some of the critical elements you should consider when compiling documentation of your organization's business continuity plan.
Project Scope and Planning
As with any formalized business process, the development of a resilient business continuity plan requires the use of a proven methodology. Organizations should approach the planning process with several goals in mind:
Perform a structured review of the business's organization from a crisis planning point of view.
Create a BCP team with the approval of senior management.
Assess the resources available to participate in business continuity activities.
Analyze the legal and regulatory landscape that governs an organization's response to a catastrophic event.
The exact process you use will depend on the size and nature of your organization and its business. There isn't a “one-size-fits-all” guide to business continuity project planning. You should consult with project planning professionals in your organization and determine the approach that will work best within your organizational culture.
The purpose of this phase is to ensure that the organization dedicates sufficient time and attention to both developing the project scope and plan and then documenting those activities for future reference.
Organizational Review
One of the first responsibilities of the individuals responsible for business continuity planning is to perform an analysis of the business organization to identify all departments and individuals who have a stake in the BCP process. Here are some areas to consider:
Operational departments that are responsible for the core services the business provides to its clients
Critical support services, such as the IT department, facilities and maintenance personnel, and other groups responsible for the upkeep of systems that support the operational departments
Corporate security teams responsible for physical security, since they are many times the first responders to an incident and are also responsible for the physical safeguarding of the primary facility and alternate processing facility
Senior executives and other key individuals essential for the ongoing viability of the organization
This identification process is critical for two reasons. First, it provides the groundwork necessary to help identify potential members of the BCP team (see the next section). Second, it builds the foundation for the remainder