Russia, China and Iran hackers target Trump and Biden, Microsoft says

Hackers with ties to Russia, China and Iran are attempting to snoop on people and groups involved with the US 2020 presidential election, Microsoft says.

The Russian hackers who breached the 2016 Democratic campaign are again involved, said the US tech firm.

Microsoft said it was "clear that foreign activity groups have stepped up their efforts" targeting the election.

Both President Donald Trump and Democrat Joe Biden's campaigns are in the cyber-raiders' sights.

Russian hackers from the Strontium group have targeted more than 200 organisations, many of which are linked to US political parties - both Republicans and Democrats, Microsoft said in a statement.

The same attackers also targeted British political parties, said Microsoft, without specifying which ones.

Strontium is also known as Fancy Bear, a cyber-attack unit allegedly affiliated with Russia's GRU military intelligence service.

Russia and China have denied the reports. On Friday Dmitry Peskov, a spokesman for President Vladimir Putin, said the Kremlin had never tried to interfere in other countries' elections.

Chinese foreign ministry spokesman Zhao Lijian said Microsoft "should not make accusations against China out of nothing".