It's no secret that the White House is eager to protect the energy grid against cyberattacks, but it's now clear that the government is speaking from bitter, first-hand experience. Nextgov has confirmed that foreign hacker groups broke into the Nuclear Regulatory Commission's systems twice within the past three years, compromising PCs and accounts by tricking users into installing malware. A third, individually-launched attack also happened during the same time frame. While investigators couldn't determine the origins due to internet providers deleting their logs, the targets suggest that the attacks were government-backed -- the NRC knows the contents and health of reactors across the US. That logically draws suspicion toward China or Russia, although these could have simply been black market operators hoping to sell to the highest bidder.