Ukraine's nuclear operator Energoatom on Tuesday reported what it called an "unprecedented" cyberattack on its website, but said its operations had not been disrupted.

"On August 16, 2022, the most powerful cyberattack since the start of the Russian invasion occurred against Energoatom's website," the operator said on Telegram.

It "was attacked from Russian territory".

The Russian "popular cyberarmy" group used more than 7 million internet bots to attack the website for three hours, Energoatom said.

But the assault "did not have a considerable impact on the work of the Energoatom website".

A Telegram channel called "popular cyberarmy" in Russian around midday called on its followers to attack the Ukrainian nuclear operator's website.

But by Tuesday evening, it had announced a "change" in plans, redirecting supporters to a new target -- the Ukrainian Institute of National Remembrance, whose website was sluggish.

The cyberattack comes as tensions flare over the Zaporizhzhia power plant in the south of the country, which Russian forces occupied in March, shortly after invading its pro-EU neighbour.

Russia and Ukraine have accused each other of shelling the nuclear installation, which is the largest in Europe, sparking fears of a nuclear accident.

Ukraine counted on four nuclear power stations to supply it with around half of its electricity supply before Russia's invasion on February 24.

Ukraine was the site of the world's worst nuclear accident in 1986, when the Chernobyl power station's reactor number four exploded.

The power station's three other reactors were successively closed down, with the latest shutting off in 2000.

Russian troops on the first day of the invasion seized the Chernobyl plant, occupying it and a highly radioactive exclusion zone around the complex for several weeks.

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Russia defence minister discussed Ukraine nuclear plant with UN chief: Moscow
Moscow (AFP) Aug 15, 2022
Russian Defence Minister Sergei Shoigu and UN chief Antonio Guterres discussed the security situation at the Zaporizhzhia nuclear plant in Ukraine, which is currently under Moscow's control and has been the target of fighting, Moscow said on Monday. "Sergei Shoigu conducted telephone negotiations with UN Secretary-General Antonio Guterres regarding the conditions for safe operation of the Zaporizhzhia nuclear power plant," the Russian defence ministry said in a statement. The plant, Europe's bi ... read more