Donald Trump is a known entity to the public, but the reality TV star and business mogul has never undergone the kind of scrutiny that a presidential candidate goes through until now. The Democratic National Committee (DNC) has therefore been doing extensive opposition research on Trump — research that is invaluable to foreign governments.

So it’s no surprise that not one but possibly two different Russian intelligence agencies have hacked the DNC’s computer network in an attempt to learn more about the presidential hopeful.

The Washington Post reports that security firms hired by the DNC believe that two different hacker groups, both linked to the Russian government, are behind the hack, specifically focusing on opposition research into Donald Trump: