InfoSec Flashcards
What is a security plan?
A plan that identifies and organizes the security activities for a system/organization
What does a security plan do?
Describes the current situation and highlights the improvement
It is an official record of current security practices and a blueprint for orderly change to improve those practices
What three essential questions should a security policy answer?
Who should be allowed access?
To what system and organizational resources should access be allowed?
What types of access should each user be allowed for each resource?
What should a security policy specify?
- The organization’s security goals
- Where the responsibility for security lies
- The organization’s commitment to security
How should a security policy be written?
Not too long, complex, detailed, and fast and easy to read
What does “current security status” mean?
- An understanding of the current vulnerabilities.
- Defines the limits of responsibility for the security
What is risk analysis?
A systematic investigation of the system, its environment, and what might go wrong
And then forms the basis for describing the current security state
What’s the meaning of security requirements?
Security requirements are functional or performance demands placed on a system to ensure a desired level of security
What is the characteristics of good security requirements?
- Correctness: Are the requirements understandable? Are they stated without error?
- Consistency: Are there any conflicting or ambiguous requirements?
- Completeness: Are all possible situations addressed by the requirements?
- Realism: Is it possible to implement what the requirements mandate?
- Need: Are the requirements unnecessarily restrictive?
- Verifiability: Can tests be written to demonstrate conclusively and objectively that the requirements have been met?
- Traceability: Can each requirement be traced to the functions and data related to it so that changes in a requirement can lead to easy reevaluation?
What’s the meaning behind accountability/responsibility for implementation
A section of the security plan that will identify which people (roles) are responsible for implementing security requirements
What is the common roles in a security plan?
- Users –Regardless of if they are responsible for the security of their own machines, they have some responsibility
- Owners –Product/process/system/…
- Managers - May be responsible for seeing that the people they supervise implement security measures, and can also be legally responsible
- Administrators –Network/system/security/database/…
- Information officers - May be responsible for overseeing the creation and use of data; these officers may also be responsible for the retention and proper disposal of data
- Personnel staff members - May be responsible for security involving employees, e.g., screening employees, handling terminations, arranging security training programs
What is a timetable?
A timetable means of how and when the elements in it will be performed must be included
What is a plan maintenance?
A plan that specify the order which controls are to be implemented.
What must be included in a plan maintenance?
- New equipment will be acquired
- New connectivity requested
- New threats identified…
- The plan must include procedures for change and growth
- The plan must include a schedule for periodic review
Why does security planning need team members and commitment?
Security planning touches every aspect of an organization and therefore requires participation well beyond the security group
What three groups must contribute to making a security plan if you want it to succeed?
- Management
- The planning team
- Those affected by the security
What is a business continuity plan?
A (business) continuity plan documents how a business will continue to function during or after a computer security incident
What does a business continuity plan address?
- Catastrophic situations, in which all or a major part of a computing capability is suddenly unavailable
- Long duration, in which the outage is expected to last for so long that business will suffer
What does a business continuity plan assess?
- What are the essential assets?
- What could disrupt the use of these assets?
What us the goal of a incident response?
Be able to handle the current security incident without direct regard for the business issues
What is a security incident response plan?
It tells the staff how to deal with a security incident
A incident response plan should include?
- Define what constitutes an incident
- Identify who is responsible for taking charge of the situation
- Describe the plan of action
What is ISO/IEC 27005 about?
Information security risk management (ISRM)
What is ISO 31000 about?
(general) Risk Management (RM) (principles and guidelines)