The cyberthreat landscape is evolving as threat actors develop new tactics to keep up with increasingly sophisticated corporate IT environments. In particular, threat actors are increasingly exploiting supply chain vulnerabilities to reach downstream targets.

The effects of supply chain cyberattacks are far-reaching, and can affect downstream organizations. The effects can also last long after the attack was first deployed. According to an Identity Theft Resource Center report, “more than 10 million people were impacted by supply chain attacks targeting 1,743 entities that had access to multiple organizations’ data” in 2022. Based upon an IBM analysis, the cost of a data breach averaged $4.45 million in 2023.

What is a supply chain cyberattack?

Supply chain cyberattacks are a type of cyberattack in which a threat actor targets a business offering third-party services to other companies. The threat actor will then leverage its access to the target to reach and cause damage to the business’s customers. Supply chain cyberattacks may be perpetrated in different ways.

• Software-Enabled Attack: This occurs when a threat actor uses an existing software vulnerability to compromise the systems and data of organizations running the software containing the vulnerability. For example, Apache Log4j is an open source code used by developers in software to add a function for maintaining records of system activity. In November 2021, there were public reports of a Log4j remote execution code vulnerability that allowed threat actors to infiltrate target software running on outdated Log4j code versions. As a result, threat actors gained access to the systems, networks, and data of many organizations in the public and private sectors that used software containing the vulnerable Log4j version. Although security upgrades (i.e., patches) have since been issued to address the Log4j vulnerability, many software and apps are still running with outdated (i.e., unpatched) versions of Log4j.

• Software Supply Chain Attack: This is the most common type of supply chain cyberattack, and occurs when a threat actor infiltrates and compromises software with malicious code either before the software is provided to consumers or by deploying malicious software updates masquerading as legitimate patches. All users of the compromised software are affected by this type of attack. For example, Blackbaud, Inc., a software company providing cloud hosting services to for-profit and non-profit entities across multiple industries, was ground zero for a software supply chain cyberattack after a threat actor deployed ransomware in its systems that had downstream effects on Blackbaud’s customers, including 45,000 companies. Similarly in May 2023, Progress Software’s MOVEit file-transfer tool was targeted with a ransomware attack, which allowed threat actors to steal data from customers that used the MOVEit app, including government agencies and businesses worldwide.

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