Abstract: A microwave photonic system for joint radar and secure communication is proposed. Microwave photonic frequency multiplying and frequency conversion are simultaneously employed to shift the ...

NASA has lost contact with its MAVEN spacecraft, which has been orbiting Mars for over a decade. The loss of signal occurred on Dec. 6 as the orbiter passed behind Mars from Earth's perspective. MAVEN ...

One of NASA’s workhorse spacecraft in orbit around Mars has fallen silent, leaving agency personnel scrambling to troubleshoot the issue. The Mars Atmosphere and Volatile Evolution (MAVEN) mission ...

War Secretary Pete Hegseth suggested he would use Signal again to discuss military operations, even after a recently-released report from the War Department‘s inspector general found that his use of ...

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 ...

WASHINGTON — The Defense Department Inspector General concluded in a report filed Tuesday that the information Defense Secretary Pete Hegseth shared on a group Signal chat about a pending military ...

The defense secretary has insisted no classified information was shared. A monthslong investigation into Defense Secretary Pete Hegseth's use of the commercial messaging app Signal is complete and its ...

For nearly nine months, Trump-administration officials have defended top national-security leaders who shared information in a Signal chat about U.S. strikes in Yemen, first reported by The Atlantic’s ...

A new study describes a key molecular mechanism that explains how cells exchange information through extracellular vesicles (EVs), small particles with great therapeutic potential. The results, ...

A new study describes a key molecular mechanism that explains how cells exchange information through extracellular vesicles (EVs), small particles with great therapeutic potential. The results, ...

Signal Web Communication Framework provides a secure environment for encrypted chat and private messaging built around signal messaging and signal app concepts. Signal is a secure communication ...

A new Android banking trojan named Sturnus can capture communication from end-to-end encrypted messaging platforms like Signal, WhatsApp, and Telegram, as well as take complete control of the device.