Abstract: Underwater Acoustic Communication (UWA) is an emerging wireless technology that enables reliable and long range data transmission in challenging underwater environments. To support high data ...

Abstract: In high-mobility environments, orthogonal frequency division multiplexing (OFDM) systems suffer from severe performance degradation due to Doppler-induced loss of subcarrier orthogonality.

The Pentagon’s latest report makes one thing clear: Signal protects conversations, but it was never designed to safeguard U.S. war plans — and using it that way carried real risk for American forces.

James LaPorta is a national security coordinating producer in CBS News' Washington bureau. He is a former U.S. Marine infantryman and veteran of the Afghanistan war. The report found the former Fox ...

The Signalgate scandal that enveloped US Secretary of Defense Pete Hegseth in March appears to be symptomatic of a wider lax attitude towards the use of non-approved messaging apps by officials and ...

The Pentagon's watchdog has concluded that U.S. Secretary of Defense Pete Hegseth risked endangering American troops when he shared sensitive information on the messaging app Signal earlier this year.

The inspector general concluded that the defense secretary violated the Pentagon’s instructions on using a private electronic device to share sensitive information. By John Ismay Reporting from ...

Defense Secretary Pete Hegseth’s bad week just got worse. That’s after the long-awaited release Thursday of an inspector general’s report on his sharing of highly sensitive military attack plans on ...

A highly critical inspector general report found Defense Secretary Pete Hegseth jeopardized troop safety and violated department policy by using the Signal app on his personal cell phone to discuss a ...

The Pentagon watchdog concluded that Defense Secretary Pete Hegseth risked endangering American troops and the US mission against Houthi rebels in Yemen when he shared attack plans on the Signal ...

WASHINGTON (AP) — The Pentagon’s watchdog found that Defense Secretary Pete Hegseth put U.S. personnel and their mission at risk when he used the Signal messaging app to convey sensitive information ...