The Washington Post reports that the emails, text messages, and other computer files of The DNC [Democratic National Committee] were accessed by two groups allegedly linked to Russia. Opposition research on Republican presidential candidate Donald Trump was stolen.
One group known as Cozy Bear broke into the DNC’s network a year ago and maintained access without getting caught. The other group known as Fancy Bear, apparently working independently, did so much more recently. These same hackers also probed the networks of both the Trump and Clinton campaigns, as well as some Republican political action committees, but it is unknown if those attacks succeeded.
The first hacking group typically uses “spear phishing” to gain access. This is when an email appears to come from a someone the recipient knows but actually is meant to trick that person into activating embedded malicious code by clicking on an attachment or link. (Wired, 6/14/2016) (The Washington Post, 6/14/2016)
Forbes comments that the “Holy Grail of Russian intelligence is uncovering compromising material that can be used to embarrass, manipulate, or blackmail foreign political leaders.” Furthermore, “If the DNC’s cyber secrets are open to Russian intelligence hackers, the odds are overwhelming that they have Clinton’s private emails as well, especially given that Clinton’s private server was a target of the highest value.” This means Clinton could be blackmailed or otherwise manipulated by Russia as well. Forbes also notes how both cases involved spear phishing. (Forbes, 6/14/2016)
Clinton was targeted by spear phishing at least three times, twice in May 2011, and once in July 2011. It is unknown if any of those attacks succeeded. (US Department of State, 10/30/2015) (US Department of State, 3/5/2015) (US Department of State, 5/25/2016)