Which regulatory body oversees the cybersecurity measures of the TSA?

The correct answer is the Department of Homeland Security (DHS) because it is the primary federal body responsible for protecting the nation's critical infrastructure, including transportation systems. The TSA, or Transportation Security Administration, is an agency within the DHS, which means the DHS oversees its cybersecurity measures as part of a broader mandate to secure transportation and ensure public safety.

The role of the DHS includes developing national policies and coordinating efforts across different sectors to enhance cybersecurity effectiveness. Within the transportation domain, the DHS ensures that the TSA implements strategies and practices that mitigate risks associated with cyber threats.

While other organizations like the FBI and NSA play critical roles in national security and intelligence, their focus areas differ; the FBI deals with criminal justice and federal law enforcement, and the NSA primarily works on signals intelligence and information assurance. The FAA is responsible for civil aviation safety, but it does not have jurisdiction over cybersecurity measures specifically related to the TSA. Thus, the oversight of TSA's cybersecurity measures falls squarely under the responsibilities of the DHS.