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Posts Tagged ‘Security’

Currently, I am working on how Virtualization can fit into the 10 security domains, which will be published shortly, but in the mean time enjoy the refresh on the basic concepts/terminology of the 10 security domains:

Domain 1 – Security Management

  • CIA Triad – Confidentiality, Integrity and Availability
  • Risk Assessment
  • Risk Management – Threats, Vulnerabilities, Assess the threat level, how risk should be dealt with [Threat, Vulnerability, Controls]
  • Identify the threats and vulnerabilities –> understand what is the Threat, caused by what Vulnerability and resulting in what Risk
  • Assessing Asset Value – Quantitative and Qualitative
  • Quantitative Assessment – assign a monetary value -
  • Single loss expectancy (SLE) = asset value X its exposure factor = % of damage that a realized threat would have on the asset.
  • Annual rate of occurrence (ARO) = estimated number of times an event may occur within a year
  • Annual loss of expectancy (ALE) = SLE X ARO
  • Qualitative Assessment – it rates the severity of threats and the sensitivity of assets and categories [Low - Medium - High] components on the basis of this rating.
  • Handling Risk – Risk reduction, risk transference, risk acceptance and risk rejection – also can combine these measures.
  • Security Policies – official, high-level security documents – meet advisory, informative and regulatory needs – can be divided into:
    • Use Policy – email, internet access
    • Configuration Policy – network systems
    • Patch Management – approved patch
    • Infrastructure Policy – how to manage and maintain a system and by whom
    • User Account Policy – which users what permissions
    • Other Policies – encryption, backup, handling of data, password requirements etc.
  • Security Policy Objectives:
    • advise the technical team on their choice of equipment
    • guide the team in arranging the equipment
    • responsibilities of users and administrators
    • set out the consequences of a policy violation
    • reactions to the network threats + escalation steps
  • Standards – below Policies- define the processes that need to be implemented, but not the method of implementation
  • Guidelines – recommendations and suggestions of how policies or procedures should be implemented – should be flexible
  • Procedures – most specific and most detailed security documents – step-by-step implementation – specific to equipment
  • Roles and Responsibility – Senior Manager, Information Security Officer, Data Owner, Data Custodian, Users and Security Auditor
  • Information Classification – two models:
    • Military Information Classification – Top Secret, Secret, Confidential, Sensitive and Unclassified
    • Commercial Information Classification – Confidential, Private, Sensitive and Public
  • Security Training and Awareness – to all employees at various levels – should be developed different for different groups of employees (senior management, data custodians and users):
    • Security Awareness
    • Training – one-on-one
    • Education – classroom based – broader and longer

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To be continued….

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