regulations, and contractual obligations. On-site assessments can provide firsthand exposure to the security mechanisms employed at a location. Those performing on-site assessment or audits need to follow auditing protocols (such as Control Objectives for Information and Related Technology [COBIT]) and have a specific checklist of requirements to investigate.
In the auditing and assessment process, both the target and the governing body should participate in full and open document exchange and review. An organization needs to know the full details of all requirements it must comply with. The organization should submit security policy and self-assessment reports back to the governing body. This open document exchange ensures that all parties involved are in agreement about all the issues of concern. It reduces the chances of unknown requirements or unrealistic expectations. Document exchange does not end with the transmission of paperwork or electronic files. Instead, it leads into the process of documentation review.
See Chapter 12, “Secure Communications and Network Attacks,” for a discussion of third-party connectivity.
Documentation Review
Documentation review is the process of reading the exchanged materials and verifying them against standards and expectations. The documentation review is typically performed before any on-site inspection takes place. If the exchanged documentation is sufficient and meets expectations (or at least requirements), then an on-site review will be able to focus on compliance with the stated documentation. However, if the documentation is incomplete, inaccurate, or otherwise insufficient, the on-site review is postponed until the documentation can be updated and corrected. This step is important because if the documentation is not in compliance, chances are the location will not be in compliance either.
In many situations, especially related to government or military agencies or contractors, failing to provide sufficient documentation to meet requirements of third-party governance can result in a loss of or a voiding of authorization to operate (ATO). Complete and sufficient documentation can often maintain existing ATO or provide a temporary ATO (TATO). However, once an ATO is lost or revoked, a complete documentation review and on-site review showing full compliance is usually necessary to reestablish the ATO.
A portion of the documentation review is the logical and practical investigation of the business processes and organizational policies in light of standards, frameworks, and contractual obligations. This review ensures that the stated and implemented business tasks, systems, and methodologies are practical, efficient, and cost-effective, and most of all (at least in relation to security governance) that they support the goal of security through the reduction of vulnerabilities and the avoidance, reduction, or mitigation of risk. Risk management, risk assessment, and addressing risk are all methods and techniques involved in performing process/policy review.
Manage the Security Function
The security function is the aspect of operating a business that focuses on the task of evaluating and improving security over time. To manage the security function, an organization must implement proper and sufficient security governance.
The act of performing a risk assessment to drive the security policy is the clearest and most direct example of management of the security function. The process of risk assessment is discussed in Chapter 2.
Security must be measurable. Measurable security means that the various aspects of the security mechanisms function, provide a clear benefit, and have one or more metrics that can be recorded and analyzed. Similar to performance metrics, security metrics are measurements of performance, function, operation, action, and so on as related to the operation of a security feature. When a countermeasure or safeguard is implemented, security metrics should show a reduction in unwanted occurrences or an increase in the detection of attempts. The act of measuring and evaluating security metrics is the practice of assessing the completeness and effectiveness of the security program. This should also include measuring it against common security guidelines and tracking the success of its controls. Tracking and assessing security metrics is part of effective security governance.
Managing the security function includes the development and implementation of information security strategies. Most of the content of the CISSP exam, and hence this book, addresses the various aspects of development and implementation of information security strategies.
Alignment of Security Function to Business Strategy, Goals, Mission, and Objectives
Security management planning ensures proper creation, implementation, and enforcement of a security policy. Security management planning aligns the security functions to the strategy, goals, mission, and objectives of the organization. This includes designing and implementing security based on business cases, budget restrictions, or scarcity of resources. A business case is usually a documented argument or stated position in order to define a need to make a decision or take some form of action. To make a business case is to demonstrate a business-specific need to alter an existing process or choose an approach to a business task. A business case is often made to justify the start of a new project, especially a project related to security. In most organizations, money and resources, such as people, technology, and space, are limited. Due to resource limitations like these, the maximum benefit needs to be obtained from any endeavor.
One of the most effective ways to tackle security management planning is to use a top-down approach. Upper, or senior, management is responsible for initiating and defining policies for the organization. Security policies provide direction for all levels of the organization's hierarchy. It is the responsibility of middle management to flesh out the security policy into standards, baselines, guidelines, and procedures. The operational managers or security professionals must then implement the configurations prescribed in the security management documentation. Finally, the end users must comply with all the security policies of the organization.
Security management is a responsibility of upper management, not of the IT staff, and is considered an issue of business operations rather than IT administration. The team or department responsible for security within an organization should be autonomous. The information security (InfoSec) team should be led by a designated chief information security officer (CISO) who reports directly to senior management, such as the chief information officer (CIO), the chief executive officer (CEO), or the board of directors. Placing the autonomy of the CISO and the CISO's team outside the typical hierarchical structure in an organization can improve security management across the entire organization. It also helps avoid cross-department and internal political issues. The term chief security officer (CSO) is sometimes used as an alternative to CISO, but in many organizations the CSO position is a subposition under the CISO that focuses on physical security. Another potential term for the CISO is information security officer (ISO), but this also can be used as a subposition under the CISO.
Elements of security management planning
