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Chapter81.pptxSecurity Policies and Implementation Issues
Chapter 8
IT Security Policy Framework Approaches
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Security Policies and Implementation Issues
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1
Learning Objective
Describe the different methods, roles, responsibilities, and accountabilities of personnel, along with the governance and compliance of a security policy framework.
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Security Policies and Implementation Issues
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2
Key Concepts
Different methods and best practices for approaching a security policy framework
Importance of defining roles, responsibilities, and accountability for personnel
Separation of duties (SoD)
Importance of governance and compliance
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Security Policies and Implementation Issues
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Information Systems Security Policy Frameworks
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Security Policies and Implementation Issues
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Choosing the framework that works in your organization is not easy
-The one selected will be based on the organizational type, risk, and view from top management
A simplified security policy framework domain model
-Federal Information Security Management act of 2002 (FISMA)
-Committee of Sponsoring Organizations (COSO)
-Control Objectives for Information and related Technology (COBIT) (public organization only as this is for SOX 404)
-ISO 17799 (27002), 20000 (ITIL), NIST, OCTAVE, PCI DSS (if you process payments electronically)
Frameworks are flexible and allow an organization to adopt constructs that fit their overall governance and compliance planning requirements
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Choosing the right framework is not easy
Use a simplified security policy framework domain model
Flexible frameworks fit governance and compliance planning requirements
IT Security Policy Framework Domain Model
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Security Policies and Implementation Issues
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5
Risk IT Framework Process Model
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Roles
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Security Policies and Implementation Issues
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Head of information management
Data stewards
Data custodians
Data administrators
Data security administrators
Roles and Responsibilities
Executive Management
Responsible for governance and compliance requirements, funding, and policy support
Chief Information Officer (CIO)/Chief Security Officer (CSO)
Responsible for policy creation, reporting, funding, and support
Chief Financial Officer (CFO)/Chief Operating Officer (COO)
Responsible for data stewardship, owners of the data
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Roles and Responsibilities (Continued)
System Administrators/Application Administrators
Responsible for custodianship of the data, maintaining the quality of the data, and executing the policies and procedures pertaining to the data, like backup, versioning, updating, downloading, and database administration
Security Administrator
Responsible for granting access and assess threats to the data, IA program
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Committees
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Separation of Duties (SoD)
Layered security approach
SoD duties fall within each IT domain
Applying SoD can and will reduce both fraud and human errors
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Layered security approach
Using layered security provides redundancy of layers, so if one fails to catch the risk, another layer should. Thus, the more layers the better the chance that a risk will be mitigated. However, one must remember that cost and restrictions are also present with each layer deployed
Domain of responsibility and accountability
These SoD duties fall within each individual domain and applying SoD can and will reduce both fraud and human errors
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Information Technology (IT) Security Controls
IT security controls are a function of IT infrastructure that an organization has in its control and the regulatory and business objectives that need to be controlled
You can have too many IT security controls, impeding the organization from operating at optimal capacity, thus reducing its revenue potential
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Information Technology (IT) Security Controls (Continued)
Generic IT security controls as a function of a business model
Deploy a layered security approach
Use SoD approach
This applies to transactions within the domain of responsibility
Conduct security awareness training annually
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Security Policies and Implementation Issues
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Information Technology (IT) Security Controls (Continued)
Apply the three lines of defense model
First line: The business unit
Second line: The risk management team
Third line: Use independent auditors
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Importance of Governance and Compliance
Implementing a governance framework can allow organization to identify and mitigate risks in orderly fashion
Can be a cost reduction move for organizations as they can easily respond to audit requests
A well-defined governance and compliance framework provides a structured approach
Can provide a common language
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Importance of Governance and Compliance (Continued)
Is also a best-practice model for organizations of all shapes and sizes
Controls and risks become measurable with a framework
Organizations with a governance and compliance framework can operate more efficiently
If you can measure the organization against a fixed set of standards and controls, you have won
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Security Policy Framework: Six Business Risks
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Strategic risks is a broad category focused on an event that may change how the organization operates
Compliance risks relate to the impact of the business failing to comply with legal obligations
Financial risks is the potential impact when the business fails to have adequate liquidity to meet its obligations
Operational risks is a broad category that describes any event that disrupts the organization’s daily activities
Reputational risk results from negative publicity regarding an organization’s practices. This type of risk could lead to a loss of revenue or to litigation.
Other risks is a broad category that relates to all other non-IT specific events
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Strategic
Compliance
Financial
Operational
Reputational
Other
Best Practices: Security Policy Framework
Using a risk management approach to framework implementation reduces the highest risk to the organization
ISACA COBIT framework for SOX 404 requirements for publically traded organizations
Aligning the organization’s security policy with business objectives and regulatory requirements
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Best Practices: Security Policy Framework (Continued)
The use of a best practice methodology will best be answered based on organizational requirements and governmental regulations
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GRC and ERM
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Governance, Risk management, and Compliance (GRC)
A discipline formally bringing together risk and compliance
GRC best practices
ISO 27000 series
COBIT
COSO
Enterprise Risk Management (ERM)
Follows common risk methodologies
Similarities Between GRC and ERM
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Defines risk in terms of business threats
Applies flexible frameworks to satisfy multiple compliance regulations
Eliminates redundant controls, policies, and efforts
Proactively enforces policy
Seeks line of sight into the entire population of risks
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Defines risk in terms of business threats
Applies flexible frameworks
Eliminates redundant controls, policies, and efforts
Similarities Between GRC and ERM (Continued)
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Security Policies and Implementation Issues
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Defines risk in terms of business threats
Applies flexible frameworks to satisfy multiple compliance regulations
Eliminates redundant controls, policies, and efforts
Proactively enforces policy
Seeks line of sight into the entire population of risks
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22
Proactively enforces policy
Seeks line of sight into the entire population of risks
Differences Between GRC and ERM
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Security Policies and Implementation Issues
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GRC focuses on technology, a series of tools and centralized policies
ERM focuses on value delivery, takes a broad look at risk based on the adoption driven by the organization’s leadership, and shifts the discussion from what the organization should spend to how the organization spends money mitigating risk
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GRC
Focuses on technology, a series of tools and centralized policies
ERM
Focuses on value delivery
Takes a broad look at risk based on adoption driven by leadership
Case Studies
Hamburger chain
POS
WiFi Hotspot
Edward Snowden
Excessive access
Penetration testing
Adnoc Distribution
Inadequate funding of IT
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Summary
Information systems security policy frameworks and IT security controls
Difference between GRC and ERM
Business risks associated with security policy framework
Roles and responsibilities associated with information systems security policy framework and SoD
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