As protesters surrounded the White House law enforcement started to devise new strategists to monitor anyone whether they were a legitimate threat or not.

"The use of military personnel has prompted questions about overreach, including now at the Defense Intelligence Agency," said Yahoo News in a Thursday report. "During a weekly unclassified virtual town hall on Wednesday hosted by DIA Director Lt. Gen. Robert Ashley, agency employees questioned whether they could be placed on a task force, reassigned, detailed to another agency, or otherwise ordered to support domestic intelligence efforts to investigate protesters, according to two sources familiar with the matter."

State-backed hackers from China have targeted staffers working on the U.S. presidential campaign of Joe Biden, a senior Google security official said Thursday. The same official said Iranian hackers had also recently targeted email accounts belonging to President Donald Trump's campaign staff.

The announcement, made on Twitter by the head of Google's Threat Analysis Group, Shane Huntley, is the latest indication of the digital spying routinely aimed at top politicians of all stripes.

Huntley said there was "no sign of compromise" of either campaign.

Iranian attempts to break into Trump campaign officials' emails have been documented before. Last year, Microsoft Corp announced that a group often nicknamed Charming Kitten had tried to break into email accounts belonging to an unnamed U.S. presidential campaign that sources identified as Trump's.