Supply Chain Attacks
Supply chain attacks target the less-secure elements in your supply chain (software vendors, service providers, or hardware manufacturers) to gain access to your organization indirectly. These attacks are particularly dangerous because they exploit trusted relationships.
How supply chain attacks work
Software supply chain attacks compromise legitimate software updates or development tools, distributing malware through trusted channels. The SolarWinds attack (2020) is the most prominent example, where attackers inserted malicious code into a software update that was distributed to 18,000 organizations. Hardware supply chain attacks involve tampering with physical components during manufacturing or shipping. Service provider attacks target managed service providers (MSPs) or cloud service providers to gain access to their clients' systems.
Why they are increasing
Organizations have become better at defending their own perimeters, making indirect attacks through trusted vendors more attractive. The increasing reliance on third-party software, cloud services, and outsourced IT creates more attack surface. A single successful supply chain compromise can give attackers access to thousands of targets simultaneously. Open-source software dependencies create complex, often unaudited supply chains.
Defending against supply chain attacks
Maintain an inventory of all third-party software and vendors. Evaluate the security posture of your supply chain partners. Apply zero-trust principles and verify even trusted sources. Monitor for anomalous behavior from trusted software and services. Use software composition analysis (SCA) to track open-source dependencies. Require software bills of materials (SBOMs) from vendors. Enforce strong access controls for third-party connections. Regularly review and minimize the number of third-party integrations.
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