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Risk Management21 min read2024-11-05

Supply Chain Security: Protecting Against Third-Party Risks

Supply chain attacks have become a primary vector for sophisticated threat actors. Learn how to assess, manage, and mitigate third-party security risks.

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Asfaleia Team

Chief Security Researcher

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Supply Chain Security: Protecting Against Third-Party Risks
62%
Breaches via Third Party
$4.5M
Avg. Third-Party Breach
98%
Have Breached Vendor
103 Days
Extra Detection Time

The Supply Chain Threat

Attackers target your vendors because it's easier than attacking you directly. One compromised supplier can expose thousands of downstream customers.

Critical Insight

62% of breaches involve third parties. Supply chain attacks cost 12% more and take 103 days longer to detect than direct attacks.

Anatomy of Supply Chain Attacks

Attack Pattern

Phase 1

Compromise Vendor

Target trusted supplier

Phase 2

Inject Malware

Into software/update

Phase 3

Distribute

Via legitimate channels

Phase 4

Mass Impact

Thousands compromised

Major Supply Chain Incidents

Notable Attacks

1

SolarWinds (2020)

SUNBURST backdoor in Orion update, 18,000+ customers affected, nation-state actor

2

Kaseya (2021)

REvil ransomware via VSA, 1,500+ businesses impacted via MSPs

3

Log4Shell (2021)

Critical vulnerability in ubiquitous library, millions of applications affected

4

MOVEit (2023)

Zero-day exploitation, 2,000+ organizations breached, data of millions stolen

Software Supply Chain

  • SBOM (Software Bill of Materials) required for visibility
  • Dependency scanning in CI/CD pipelines
  • Signed packages and verification

With TPRM Program

Vendor risk visibility
Contractual protections
Monitoring & response
Limited blast radius
Faster detection

Without TPRM Program

Blind trust in vendors
No security requirements
Discover after breach
Unlimited exposure
Delayed discovery

TPRM Framework

Third-Party Risk Controls

Vendor Assessment
Security questionnaires
SOC 2/ISO 27001 review
Penetration test results
Incident history check
Contractual
Security requirements
Right to audit clauses
Breach notification SLAs
Liability provisions
Technical
Limited access/least privilege
Network segmentation
Activity monitoring
SBOM requirements
Ongoing
Continuous monitoring
Annual reassessments
Threat intel integration
Exit strategy planning

Quick Win

Tier your vendors by risk. Focus deep assessments on critical vendors with data access. Use questionnaires for lower-risk vendors.

Conclusion

Supply chain security requires a comprehensive TPRM program. Assess vendor risk, implement technical controls, and continuously monitor your extended attack surface.

Tags

#Supply Chain#Third-Party Risk#TPRM#Vendor Security#SBOM
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Written by

Asfaleia Team

Chief Security Researcher

GRC and vendor risk specialist with expertise in third-party assessments.

Need TPRM Support?

Our GRC team can help build your third-party risk management program.