Iranian cyber actors sent messages during the summer to people involved in President Joe Biden's then re-election campaign containing non-public material from Republican presidential candidate Donald Trump's campaign as part of efforts to influence the Nov.

US officials now believe that information taken from the Trump campaign was sent in unsolicited emails to people linked to the campaign in late June and early July - before Biden dropped out of the race for president.

Iranian "malicious cyber actors" emailed associates of President Biden's re-election campaign with information "taken from stolen, non-public material from former President Trump's campaign" over the summer,