The computer network used by Democratic presidential candidate Hillary Clinton’s campaign was hacked as part of a broad cyber attack on Democratic political organizations, people familiar with the matter told Reuters.
The latest attack, which was disclosed to Reuters on Friday, follows reports of two other hacks on the Democratic National Committee and the party’s fundraising committee for candidates for the U.S. House of Representatives.
The U.S. Department of Justice national security division is investigating whether cyber hacking attacks on Democratic political organizations threatened U.S. security, sources familiar with the matter said on Friday.
The involvement of the Justice Department’s national security division is a sign that the Obama administration has concluded that the hacking was state sponsored, individuals with knowledge of the investigation said.
The Clinton campaign, based in Brooklyn, had no immediate comment and referred Reuters to a comment from earlier this week by campaign senior policy adviser Jake Sullivan criticizing Republican presidential candidate Donald Trump and calling the hacking “a national security issue.”