Suspected nation-state hackers from Russia, Iran and elsewhere have launched nearly 800 cyberattacks against political organizations over the past year that have been detected by Microsoft Corp., with the vast majority of the attempts targeting groups based in the U.S.

Think tanks and nongovernmental groups that work with candidates or political parties—or on issues important to their campaigns—have suffered most of the attacks.

The assaults could be a precursor to direct attacks on campaigns and election systems.

Source » wsj