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Software Supply Chain Security

This document outlines the standards and best practices for securing the software supply chain at Bayat.

Supply Chain Security Fundamentals

Risk Landscape

  • Modern Supply Chain Threats: Common attack vectors and vulnerabilities
  • Attack Surface Analysis: Scope and impact of supply chain vulnerabilities
  • Threat Actors: Motivation and capabilities of potential attackers
  • Regulatory Requirements: Compliance standards for supply chain security

Security Principles

  1. Defense in Depth:

    • Layered security controls
    • Redundant verification mechanisms
    • Principle of least privilege implementation
    • Fail-secure design patterns

  2. Zero Trust:

    • Trust verification requirements
    • Continuous validation principles
    • Default deny posture
    • Micro-segmentation strategies

Dependency Management

Dependency Evaluation

  1. Risk Assessment Framework:

    • Criticality evaluation criteria
    • Maintainer reputation assessment
    • Security posture evaluation
    • License compliance review

  2. Selection Criteria:

    • Health metrics evaluation
    • Maintenance activity requirements
    • Community support assessment
    • Commercial support consideration

Dependency Tracking

  1. Software Bill of Materials (SBOM):

    • SBOM generation requirements
    • Format standards (CycloneDX, SPDX)
    • Scope and depth requirements
    • Maintenance and update frequency

  2. Inventory Management:

    • Dependency database requirements
    • Version tracking systems
    • License management
    • Usage tracking mechanisms

Vulnerability Management

  1. Monitoring Requirements:

    • Vulnerability notification systems
    • Automated scanning frequency
    • Manual review requirements
    • Dependency graph analysis

  2. Remediation Process:

    • Vulnerability triage framework
    • Patching timeline requirements
    • Mitigation strategy documentation
    • Update verification process

Build Infrastructure Security

Secure Build Systems

  1. Build Environment Hardening:

    • Environment isolation requirements
    • Access control standards
    • Network segmentation guidelines
    • System hardening checklists

  2. Pipeline Security:

    • Pipeline definition security
    • Authentication and authorization requirements
    • Secrets management integration
    • Pipeline integrity verification

Build Artifact Integrity

  1. Reproducible Builds:

    • Deterministic build requirements
    • Build environment standardization
    • Input verification mechanisms
    • Output validation standards

  2. Artifact Signing:

    • Code signing certificate requirements
    • Key management procedures
    • Signature verification standards
    • Chain of trust implementation

Build Traceability

  • Build provenance requirements
  • Audit logging standards
  • Chain of custody documentation
  • Build metadata requirements

Repository Security

Source Code Management

  1. Repository Controls:

    • Access control requirements
    • Branch protection rules
    • Code review standards
    • Merge request approval process

  2. Integrity Verification:

    • Commit signing requirements
    • History protection mechanisms
    • Tamper detection systems
    • Trust verification standards

Artifact Repository Security

  • Repository access control standards
  • Artifact validation requirements
  • Storage security guidelines
  • Retention and cleanup policies

Deployment Security

Deployment Pipeline

  1. Promotion Controls:

    • Environment promotion requirements
    • Approval workflow standards
    • Segregation of duties implementation
    • Deployment authorization process

  2. Deployment Verification:

    • Artifact verification requirements
    • Runtime validation standards
    • Configuration verification
    • Post-deployment testing

Infrastructure Validation

  • Infrastructure as Code security review
  • Immutable infrastructure patterns
  • Drift detection requirements
  • Configuration validation standards

Third-Party Risk Management

Vendor Assessment

  1. Vendor Security Assessment:

    • Security questionnaire requirements
    • Documentation review standards
    • Certification validation
    • On-site assessment guidelines

  2. Continuous Monitoring:

    • Vendor security posture monitoring
    • Incident notification requirements
    • Periodic reassessment standards
    • Risk score tracking

Contract Requirements

  • Security SLA standards
  • Breach notification clauses
  • Right to audit provisions
  • Vulnerability management requirements

Secure Development Practices

Secure Coding

  1. Code Security Standards:

    • Language-specific security guidelines
    • Common vulnerability prevention
    • Security testing requirements
    • Manual code review standards

  2. Automation Integration:

    • Static analysis tool requirements
    • Dynamic analysis integration
    • Interactive application security testing
    • Software composition analysis

Security Testing

  • Security test suite requirements
  • Penetration testing frequency
  • Fuzz testing implementation
  • Security regression testing

Incident Response

Security Incident Management

  1. Detection Capabilities:

    • Threat detection requirements
    • Alert correlation standards
    • Investigation procedure documentation
    • Forensic capability requirements

  2. Response Process:

    • Incident classification framework
    • Response team structure
    • Communication plan templates
    • Containment procedure documentation

Supply Chain Compromise Response

  • Compromise assessment methodology
  • Isolation procedures
  • Alternative supply path activation
  • Recovery and remediation guidelines

Governance and Compliance

Policy Framework

  1. Policy Requirements:

    • Supply chain security policy components
    • Standard operating procedures
    • Role and responsibility definition
    • Exception management process

  2. Compliance Management:

    • Regulatory requirement mapping
    • Compliance monitoring procedures
    • Evidence collection standards
    • Audit preparation guidelines

Metrics and Measurement

  • Supply chain security KPIs
  • Risk measurement methodology
  • Control effectiveness metrics
  • Continuous improvement framework

Education and Awareness

Training Requirements

  • Developer security training curriculum
  • DevOps security awareness program
  • Executive briefing guidelines
  • Role-specific training requirements

Knowledge Sharing

  • Threat intelligence sharing mechanisms
  • Vulnerability notification process
  • Lessons learned documentation
  • Community engagement guidelines

References