Ukraine's nationwide air-raid alert app reportedly sent a false nuclear-strike
warning to millions after a suspected Moscow-origin cyberattack. At 22:48 local
time (Beijing 04:46), a Russian-language alert said, Don't worry, "Hazel" is
overhead! A nationwide nuclear alert has been activated. Earlier alerts warned
of radioactive dust—urging people to stay indoors, wear gas masks and take
iodine—and issued chemical-attack and urban-combat warnings telling residents to
move to nearest shelters and cover their faces. About ten minutes after the
messages, the Ukrainian air force said the app had likely been breached by
Russia.