A digital supply chain is the network of vendors, cloud services, software providers, contractors, and other partners that keep an organization’s digital operations running. It includes everything from identity systems and backup services to managed security, payment platforms, and code libraries. Because these dependencies are interconnected, a weakness in one link can affect many others.
In cyber security, the digital supply chain matters because attackers often target the trusted third party instead of the final victim. Common attacks include compromised software updates, stolen vendor credentials, malicious integrations, and abuse of remote support tools. Defenders reduce this risk with supplier due diligence, access control, monitoring, patch management, contract security requirements, and incident reporting rules. Strong supply-chain security helps organizations verify who they trust and limit damage when a partner is breached.