Which agency conducted a study that led to the disabling of USB ports on DODIN networked computer systems?

The Department of Homeland Security conducted a study that highlighted the vulnerabilities associated with USB ports on Department of Defense Information Network (DODIN) computer systems. This study pinpointed how USB ports could be exploited as vectors for malware and other security risks, leading to unauthorized access and data breaches. In response to these findings, measures were put in place to disable USB ports on certain networks to mitigate the risk of these threats.

The focus on the Department of Homeland Security stems from its role in protecting the nation's critical infrastructure and cybersecurity. This agency’s research and findings directly informed decision-makers on necessary security protocols. Other agencies, while also vital to national security, do not focus on the same breadth of cybersecurity vulnerabilities in this context, which differentiates the Homeland Security's involvement in this specific action.