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Failure Mode Analysis

Purpose​

Systematically identify potential failure scenarios in system upgrades or changes and outline corresponding recovery strategies to mitigate risks.

References​

Important Sections​

Metadata​

Document ownership and review status:

  • Author: Name of the individual drafting the document
  • Created at: Date of creation
  • Initial Reviewers: Names of initial reviewers
  • Need Approval From: Security team member responsible for final approval
  • Status: Current document status (Draft, In Review, Implementing Actions, Final)

Introduction​

Brief overview of the project or change being analyzed, including:

  • Project context
  • Scope of changes
  • Key objectives
  • System components affected

Failure Modes and Recovery Paths​

For each potential failure mode, document:

  • Description: Detailed explanation of the failure scenario
  • Risk Assessment: Evaluation of severity and likelihood
  • Mitigations: Strategies to prevent or mitigate the failure
  • Recovery Path: Step-by-step recovery procedures

Audit Requirements​

Document specific audit needs:

  • Required audit scope
  • Critical areas for review
  • Security considerations

Action Items​

Track implementation progress:

  • Risk mitigation tasks
  • Implementation requirements
  • Testing needs
  • Documentation updates

Appendix​

Supporting information:

  • Technical references
  • Related documentation
  • Additional context
  • Supporting data

Workflow​

  • The main branch in the Wonderland repo should remain stable and unchanged
  • For new work, create a feature branch (e.g., sc-feat/<feature> or sc-fix/<fix>)
  • Within this, create further branches (feat/<X>, fix/<Y>) for specific tasks
  • Open internal PRs targeting the main feature branch
  • After all internal PRs are merged, raise an external PR to the main branch of the Optimism repo

Collaboration​

  • Schedule sync review sessions with Optimism to present the FMA and incorporate feedback
  • Initial FMA drafts can be started in Notion for easier iteration and team input
  • Migrate to GitHub for final review and versioning
  • Ensure security team approval before finalizing