Fake alerts warn of nuclear danger as Ukraine and Russia report emergency app hacks

Nuclear danger, radiation threat and street combat: Ukrainians received a wave of messages Sunday night that raised alarm with a series of grave — and baseless — warnings.
Authorities said the country’s emergency alert application had been targeted in a cyberattack, and hours later Russia said its own alert system had also been hacked. The dueling accusations came just as a rare humanitarian ceasefire between the two sides ended, raising fears of intensified fighting rather than a move toward broader peace.
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