Microsoft Announces Foreign Cyberattacks On Presidential Campaigns

The video discusses the presidential campaigns of President Trump and former Vice President Joe Biden, highlighting a Russian hacking attempt on Biden's campaign. Microsoft identified the Russian group Strontium as responsible for attacks on over 200 political organizations, the same group linked to the 2016 election email hacks of Hillary Clinton.

What previous incident is the Russian group Strontium accused of?

Who reported on the events discussed in the text?