Plus: A 22-year-old former intern gets put in charge of a key anti-terrorism program, threat intelligence firms finally wrangle their confusing names for hacker groups, and more.

Plus: A 22-year-old former intern gets put in charge of a key anti-terrorism program, threat intelligence firms finally wrangle their confusing names for hacker groups, and more.

Foreign hackers have increasingly identified smartphones, other mobile devices and the apps they use as a weak link in U.S. cyberdefenses.