Clinton campaign computer service hacked

Computer systems linked to Hillary Clinton's campaign have been hacked. In what could be the latest evidence that a foreign government is looking to undermine the U.S. presidential election, the Clinton camp confirmed the breach is connected to a broad cyber-attack on Democrats.

"An analytics data program maintained by the DNC, and used by our campaign and a number of other entities, was accessed as part of the DNC hack," the campaign said in a statement.

While it's unclear what was accessed, a political expert says this type of hack is unprecedented.

The breach -- suspected to be carried out by Russian spies -- comes after 20,000 emails swiped from the Democratic National Committee servers were leaked before last week's convention. Then Friday, the congressional campaign arm of Democrats, known as the DCCC, announced it too was compromised.

The digital intrusion is overshadowing Clinton's first day back on the campaign trail. She is on a bus tour through important swing states focusing on her plan to create jobs.

The Trump campaign also weighed in by making light of the cyber crime and instead noted Clinton's previous email scandal. The New York billionaire is looking to exploit any advantage in what is expected to be a tight election this November.