U.S. officials have driven the 95% market-implied probability against hack attribution for the November 13 FAA ground stop by attributing the communications failure to legacy switches and routers overwhelmed by data during software patches and new equipment installation. Transportation Secretary Sean Duffy and Homeland Security Secretary Markwayne Mullin publicly cited mechanical overload in the FAA Telecommunications Infrastructure network rather than unauthorized access, with the FBI examining a software update and finding no intrusion footprints or claims of responsibility. This aligns with the absence of cyberattack indicators across agencies including CISA and the NSA. While the ongoing probe could theoretically surface new evidence before the November 30 resolution, current verified details on aging infrastructure and patch-related instability reinforce trader consensus around a non-malicious cause.