Cyber attacks hit Russia, Ukraine after truce ends - CNA

US-mediated talks between Russia and Ukraine are set to resume this month, having been effectively frozen since February, when the war in Iran broke out.

A veteran pays his respects at a makeshift memorial to Ukrainian soldiers killed in the war with Russia, on Independence Square in Kyiv, Ukraine on Oct 12, 2026. (Photo: AP/Efrem Lukatsky)

KYIV: Russia said its emergency warnings app came under a "massive cyberattack" on Monday (Nov 2), hours after Ukraine reported a hack in an apparent exchange of blows between the foes, as their longest truce came to an end.

Moscow's emergencies ministry said hackers posted "false information" on the app, which is designed to warn the public of incoming drone attacks and other threats.

Hours earlier, Ukraine said it suspected its air raid alert system had been compromised, after baseless alerts of a radiation threat appeared on the app.

The cyber attacks came as the longest truce of the war, limited to Ukraine's eastern Kherson region, ended on Sunday after Russia refused the offer of an extension, according to Kyiv.

CNA Games Guess Word Crack the word, one row at a time Buzzword Create words using the given letters Mini Sudoku Tiny puzzle, mighty brain teaser Mini Crossword Small grid, big challenge Word Search Spot as many words as you can Show More Show Less Moscow did not immediately say who was behind the attack on its app, while Ukraine's Center for Strategic Communications SPRAVDI blamed the hack it suffered on Russia.

The rare pause in fighting, brokered by US First Lady Melania Trump and which began early Tuesday, had enabled a humanitarian mission to the Russian-occupied city of Oleshky as the war grinds through its fifth year.

"The ceasefire, which was in effect from Oct 27 to Nov 1, has ended," Ukraine's Parliament Commissioner for Human Rights, Dmytro Lubinets, said.

He called the temporary truce "an important step in our joint humanitarian efforts" with Russia.

US-mediated talks between Russia and Ukraine are set to resume this month, having been effectively frozen since the United States and Israel launched joint strikes on Iran in February.

Ukrainian President Volodymyr Zelenskyy said on Sunday his country would stop hitting Russian oil refineries - as US counterpart Donald Trump has demanded - if Washington provided Kyiv with powerful Patriot interceptor missiles.

Kherson regional governor Oleksandr Prokudin warned local people to be particularly vigilant when the ceasefire ended and to "respond immediately to warnings about Russian attacks".

"The Air Alarm application has probably been subjected to hostile interference," Ukraine's air force said in a message. "There is no radiation threat."

Air force spokesman Yuriy Ignat confirmed to AFP that the app had been hacked.

Hours later, Russia's emergencies ministry said its teams were working to fix a "massive cyberattack" which was "enabling attackers to send false information to the public".

Russia's full-scale invasion in February 2022 has destroyed parts of eastern and southern Ukraine, left hundreds of thousands of soldiers and civilians dead and forced millions to flee their homes.

AFP spoke to several Kherson residents, one of whom said the ceasefire had been a "breath of fresh air".

"We have to use this time to get things done," said Volodymyr Omeltchenko, a 38-year-old gardener, before the truce ended.

"We're pruning the rose bushes for winter."

Pope Leo, who had pressed Russia for a truce in Oleshky, had said he hoped the temporary pause would "strengthen the desire for dialogue and lead to new concrete peace initiatives".

A Ukrainian military officer, speaking on condition of anonymity, expressed concern that the fighting would be "worse than before" when it resumed.

Russian forces on the other side of the Dnipro river had taken advantage of the calm of the past few days to amass new troops, transport ammunition stocks and collect intelligence on Ukrainian positions using surveillance drones, the officer said.