The June 2024 BlackSuit ransomware attack on CDK Global—a niche software provider powering 15,000+ US car dealerships—illustrates how fourth- and fifth-party vendors create invisible but catastrophic risk. Verizon's 2025 DBIR found 30% of breaches now stem from third parties, double the prior year. Traditional questionnaire-based assessments are too slow and too narrow to address this sprawling dependency web. Security leaders are advised to adopt AI-driven continuous monitoring across all vendor tiers, map full dependency chains, prioritize by active threat intelligence, and modernize compliance frameworks with real-time insights.
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