Introducing OCTAVE Allegro - Software Engineering Institute ...

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organization moves forward in risk analysis and mitigation activities. The worksheets also facilitate an organization’s ability to look across organizational units for similar or systemic risks and use that information to develop more effective and efficient mitigation strategies. 22 | CMU/SEI-2007-TR-012
4 Using OCTAVE Allegro This section of the report provides some practical instruction on using the OCTAVE Allegro method. It describes a collection of lessons learned from organizations that have successfully used the method. 4.1 PREPARING FOR OCTAVE ALLEGRO Some preparation is necessary before an organization can perform an OCTAVE Allegro assessment. Preparation activities include obtaining management support, allocating appropriate organizational resources to the process, and scoping the assessment activities. 4.1.1 Obtaining Senior Management Sponsorship Obtaining sponsorship from senior management is a critical factor in successfully performing an OCTAVE Allegro assessment. As with the OCTAVE methods, management must be committed to providing active support to the process and they must be willing to participate in the process when necessary, primarily in developing and sponsoring organization-wide risk measurement criteria. (The level of participation is minimized with the OCTAVE Allegro methodology and can be leveraged throughout the organization, as everyone using the methodology should use the same risk measurement criteria.) Senior management must also ensure that sufficient resources are allocated to the process, enabling members of the assessment team to devote the necessary time to performing the process. Without this, members of the assessment team are unlikely to develop useful results from the process, and the necessary resources from outside the assessment team are unlikely to be available. 4.1.2 Allocating Organizational Resources Two important aspects of the OCTAVE Allegro method are the composition and size of the assessment team. In practice, we have observed a range of possibilities for establishing an assessment team, from as few as one to as many as seven. In some cases, senior staff have performed the method by themselves, relying on their knowledge of the operational area; in others, a group of staff from the same operational unit have collaborated on the assessment. In most cases, there is also typically a representative from the information technology department that participates on the team or is directly accessible as necessary. The access to the IT department is most necessary during the mapping of information assets and the development of threat scenarios and risk mitigation plans, as they can provide technical depth that other members of the team may lack. The time commitment for the process can vary widely depending on the availability, experience, and make-up of the team, the complexity of the information asset, the complexity of the environment in which that asset is stored, transported or processed, and of course, the number of information assets being reviewed. The first time a team performs an assessment on a single information asset often can often take up to several days. As teams become more experienced and learn to efficiently divide tasks between team members, they will be better able to predict the amount of SOFTWARE ENGINEERING INSTITUTE | 23
Page 1 and 2: Introducing OCTAVE Allegro: Improvi
Page 3 and 4: Table of Contents Acknowledgements
Page 5 and 6: List of Figures Figure 1: Three OCT
Page 7 and 8: List of Tables Table 1: OCTAVE Time
Page 9 and 10: Acknowledgements The authors of thi
Page 11 and 12: Abstract This technical report intr
Page 13 and 14: 1 Introduction One of the primary g
Page 15 and 16: The method was also designed to all
Page 17 and 18: The OCTAVE Allegro approach consist
Page 19 and 20: 2 Evolving the OCTAVE Method 2.1 EX
Page 21 and 22: • minimizing the size and complex
Page 23 and 24: 2.4 SPECIFIC IMPROVEMENTS IN OCTAVE
Page 25 and 26: often serve to distract the analysi
Page 27 and 28: use of the risk worksheet) explicit
Page 29 and 30: 3 Introducing OCTAVE Allegro In thi
Page 31 and 32: 3.1.5 Step 5 - Identify Threat Scen
Page 33: created. To facilitate this activit
Page 37 and 38: 4.2.2 Developing Risk Measurement C
Page 39 and 40: 5 Next Steps The OCTAVE Allegro app
Page 41 and 42: 5.2 LOOKING FORWARD The introductio
Page 43 and 44: Appendix A OCTAVE Allegro Method Gu
Page 45 and 46: Step 1 Activity 1 Define a qualitat
Page 47 and 48: • Technology assets - Technology
Page 49 and 50: Step 2 Activity 5 Record a descript
Page 51 and 52: Step 2 Activity 7 Record the securi
Page 53 and 54: which it lives, this activity defin
Page 55 and 56: Table 3: Information Asset Containe
Page 57 and 58: Table 5: Information Asset Containe
Page 59 and 60: 3. Expand your areas of concern to
Page 61 and 62: Table 6: Description of Threat Tree
Page 63 and 64: The threat scenario derived from yo
Page 65 and 66: Step 6 - Identify Risks BACKGROUND
Page 67 and 68: Step 7 - Analyze Risks BACKGROUND A
Page 69 and 70: Step 7 Activity 2 In this step a re
Page 71 and 72: The need for collaboration between
Page 73 and 74: Step 8 Activity 1 The first activit
Page 75 and 76: Step 8 Activity 3 For all of the ri
Page 77 and 78: Appendix B OCTAVE Allegro Worksheet
Page 79 and 80: Allegro Worksheet 1 RISK MEASUREMEN
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Allegro Worksheet 4 RISK MEASUREMEN
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Allegro Worksheet 7 IMPACT AREA PRI
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Allegro Worksheet 8 CRITICAL INFORM
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Allegro Worksheet 9a INFORMATION AS
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Allegro Worksheet 9b INFORMATION AS
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Allegro Worksheet 9c INFORMATION AS
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Allegro - Worksheet 10 INFORMATION
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Appendix C OCTAVE Allegro Questionn
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Threat Scenario Questionnaire 1 Tec
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Threat Scenario Questionnaire - 2 P
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Threat Scenario Questionnaire - 3 P
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Appendix D OCTAVE Allegro Example W
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Allegro Worksheet 7 IMPACT AREA PRI
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Allegro Worksheet 8 CRITICAL INFORM
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Allegro Worksheet 9a INFORMATION AS
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Allegro Worksheet 9b INFORMATION AS
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Allegro Worksheet 9c INFORMATION AS
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Allegro Worksheet 10 Information As
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References URLs are valid as of the
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REPORT DOCUMENTATION PAGE Form Appr
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