U.S. investigates security of mobile devices

By David Shepardson WASHINGTON (Reuters) - The Federal Communications Commission and Federal Trade Commission have asked mobile phone carriers and manufacturers to explain how they release security updates amid mounting concerns over security vulnerabilities, the U.S. agencies said on Monday. The agencies have written to Apple Inc, AT&T Inc and Alphabet Inc, among others, in order "to better understand, and ultimately to improve, the security of mobile devices," the FCC said.