ISO 27001 Information Security Management System (ISMS ) - PowerPoint PPT Presentation

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ISO 27001 Information Security Management System (ISMS )

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ISO 27001 Information Security Management System (ISMS )
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ISO 27001 Information Security Management System (ISMS )

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  1. ISO 27001Information Security Management System (ISMS)

  2. InformationAssets Information is an asset • like other important business assets, has value to an organisation and consequently needs to be suitably protected. What is Information? • CurrentBusinessPlans • FuturePlans • Intellectual Property (Patents, etc) • Employee Records • CustomerDetails • BusinessPartners Records • Financial Records

  3. What is Information Security? • Information Security addresses • Confidentiality ( C ) • Integrity ( I ) • Availability (A) • Also involves • Authenticity • Accountability • Non-repudiation • Reliability

  4. Enterprise/Corporate IT Hardware Resources

  5. Information Security Risks • The range of risks exists • System failures • Denial of service (DOS) attacks • Misuse of resources • Internet/email /telephone • Damage of reputation • Espionage • Fraud • Viruses/spy-ware etc • Use of unlicensed software

  6. LayeredSecurity

  7. Security Awareness/Culture • Security is everyone’s responsibility • All levels of management accountable • Everyoneshouldconsider in their daily roles • Attitude (willing/aims/wants/targets) • Knowledge (what to do?) • Skill (how to do?) • Security is integrated into all operations • Security performance should be measured

  8. Company Policy Security Awareness Program Integrate Define Activities Feedback Implement Elicit Employees Security Awareness Program Flow

  9. Benefits of pursuing certification • Allows organizations to mitigate the risk of IS breaches • Allows organizations to mitigate the impact of IS breaches when they occur • In the event of a security breach, certification should reduce the penalty imposed by regulators • Allows organizations to demonstrate due diligence and due care • to shareholders, customers and business partners • Allows organizations to demonstrate proactive compliance to legal, regulatory and contractual requirements • as opposed to taking a reactive approach • Provides independent third-party validation of an organization’s ISMS

  10. Structure of 27000 series 27000 Fundamentals & Vocabulary 27005 Risk Management 27001:ISMS 27002 Code of Practice for ISM 27003 Implementation Guidance 27004 Metrics & Measurement 27006 Guidelines on ISMS accreditation

  11. What is ISO 27001? • ISO 27001 Part I • Code of practice for Information Security Management (ISM) • Best practices, guidance, recommendations for • Confidentiality ( C ) • Integrity ( I ) • Availability ( A ) • ISO 27001 Part II • Specification for ISM

  12. ISO 27001 Overview • Mandatory Clauses (4  8) • All clauses should be applied, NO exceptions • Annex (Control Objectives and Controls ) • 11 Security Domains (A5  A 15) • Layers of security • 39 Control Objectives • Statement of desired results or purpose • 133 Controls • Policies, procedures, practices, software controls and organizational structure • To provide reasonable assurance that business objectives will be achieved and that undesired events will be prevented or detected and corrected • Exclusions in some controls are possible, if they can be justified???

  13. Difference Between 27001:2000 and 27001:2005 Editions? Annex A

  14. ISO 27001 Implementation Steps • Decide on the ISMS scope • Approach to risk assessment • Perform GAP Analysis • Selection of controls • Statement of Applicability • Reviewing and Managing the Risks • Ensure management commitment • ISMS internal audits • Measure effectiveness andperformance • Update risk treatment plans, procedures and controls

  15. Plan-Do-Check-Act (PDCA) • The ISO 27001 adopts the “Plan-Do-Check-Act” (PDCA) • Applied to structure all ISMS processes

  16. PDCA Model

  17. ISO 27001 (Requirements) Standard Content • Introduction • Section 0 • Scope • Section 1 • Normativereferences • Section 2 • Termsanddefinitions • Section 3 • Plan • Section 4 to plan the establishment of your organization’s ISMS. • Do • Section 5 to implement, operate, and maintain your ISMS. • Check • Sections 6 and 7 to monitor, measure, audit, and review your ISMS. • Act • Section 8 to take corrective and preventive actions to improve your ISMS. • Annex A (Clauses A.5 to A.15)

  18. ISO 27001 PDCA Approach • Plan: • Study requirements • Draft an IS Policy • Discuss in IS Forum (committee) • Finalize and approve the policy • Establish implementation procedure • Staff awareness/training • Do: • Implement the policy • Check: • Monitor, measure, & audit the process • Act: • Improve the process

  19. ISMS Scope • Business security policy and plans • Current business operations requirements • Future business plans and requirements • Legislative requirements • Obligations and responsibilities with regard to security contained in SLAs • The business and IT risks and their management

  20. A Sample List of IS Policies • Overall ISMS policy • Access control policy • Email policy • Internet policy • Anti-virus policy • Information classification policy • Use of IT assets policy • Asset disposal policy

  21. The C.I.A. triangle is made up of: Confidentiality Integrity Availability (Over time the list of characteristics has expanded, but these 3 remain central)

  22. CIA + Confidentiality Integrity Availability Privacy Identification Authentication Authorization Accountability

  23. Confidentiality of information ensures that only those with sufficient privileges may access certain information. To protect confidentiality of information, a number of measures may be used, including: Information classification Secure document storage Application of general security policies Education of information custodians & end users

  24. Integrity is the quality or state of being whole, complete, & uncorrupted. The integrity of information is threatened when it is exposed to corruption, damage, destruction, or other disruption of its authentic state. Corruption can occur while information is being compiled, stored, or transmitted.

  25. Availability is making information accessible to user access without interference or obstruction in the required format. A user in this definition may be either a person or another computer system. Availability means availability to authorized users.

  26. Privacy Information is to be used only for purposes known to the data owner. This does not focus on freedom from observation, but rather that information will be used only in ways known to the owner.

  27. Information systems possess the characteristic of identification when they are able to recognize individual users. Identification and authentication are essential to establishing the level of access or authorization that an individual is granted.

  28. AAA

  29. Authentication occurs when a control provides proof that a user possesses the identity that he or she claims.

  30. After the identity of a user is authenticated, a process called authorization provides assurance that the user (whether a person or a computer) has been specifically & explicitly authorized by the proper authority to access, update, or delete the contents of an information asset.

  31. The characteristic of accountability exists when a control provides assurance that every activity undertaken can be attributed to a named person or automated process.

  32. To review ... CIA + Confidentiality Integrity Availability Privacy Identification Authentication Authorization Accountability

  33. Think about your home computer. How do you secure it? How do you guarantee confidentiality, integrity, & availability?

  34. NSTISSC Security Model

  35. Two well-known approaches to management: Traditional management theory using principles of planning, organizing, staffing, directing, & controlling (POSDC). Popular management theory using principles of management into planning, organizing, leading, & controlling (POLC).

  36. Planning is the process that develops, creates, & implements strategies for the accomplishment of objectives. Three levels of planning: 1. Strategic 2. Tactical 3. Operational

  37. In general, planning begins with the strategic plan for the whole organization. To do this successfully, an organization must thoroughly define its goals & objectives.

  38. Organization: structuring of resources to support the accomplishment of objectives. Organizing tasks requires determining: What is to be done In what order By whom By which methods When

  39. Leadership encourages the implementation of the planning and organizing functions, including supervising employee behavior, performance, attendance, & attitude. Leadership generally addresses the direction and motivation of the human resource.

  40. Control is monitoring progress toward completion & making necessary adjustments to achieve the desired objectives. Controlling function determines what must be monitored as well using specific control tools to gather and evaluate information.

  41. Four categories of control tools: Information Financial Operational Behavioral

  42. The Control Process

  43. How to Solve Problems Step 1: Recognize & define the problem Step 2: Gather facts & make assumptions Step 3: Develop possible solutions Step 4: Analyze & compare possible solutions Step 5: Select, implement, & evaluate a solution

  44. Feasibility Analyses Economic feasibility assesses costs & benefits of a solution Technological feasibility assesses an organization’s ability to acquire & manage a solution Behavioral feasibility assesses whether members of an organization will support a solution Operational feasibility assesses if an organization can integrate a solution

  45. Extended characteristics or principles of infosec management (AKA, the 6 P’s) Planning Policy Programs Protection People Project Management

  46. 1. Planning as part of InfoSec management is an extension of the basic planning model discussed earlier in this chapter. Included in the InfoSec planning model are activities necessary to support the design, creation, and implementation of information security strategies as they exist within the IT planning environment.

  47. Several types of InfoSec plans exist: Incident response Business continuity Disaster recovery Policy Personnel Technology rollout Risk management Security program, including education, training, & awareness

  48. 2. Policy: set of organizational guidelines that dictates certain behavior within the organization. In InfoSec, there are 3 general categories of policy: 1. General program policy (Enterprise Security Policy) 2. An issue-specific security policy (ISSP) 3. System-specific policies (SSSPs)

  49. 3. Programs: specific entities managed in the information security domain. One such entity: security education training & awareness (SETA) program. Other programs that may emerge include the physical security program, complete with fire, physical access, gates, guards, & so on.