Emails from top officials at the National Republican Congressional Committee were hacked during the 2018 midterm elections, Republican sources tell CNN, exposing the GOP's House campaign arm to an intrusion by an "unknown entity."

The use of hacked material during electoral campaigns has been a focus ever since the 2016 campaign, when emails from the upper echelons of the Clinton campaign were leaked in the closing weeks of the campaign.

Shortly after Trump was briefed during the transition by senior US intelligence officials about the hacks at the Democratic National Committee, he gloated in his first comments and said the Republican National Committee was also targeted but "had strong hacking defenses and the hackers were unsuccessful."

文本选自：CNN（美国有线电视新闻网）

作者：Dan Merica, Marshall Cohen and Donie O'Sullivan,

原文标题：House Republican campaign arm hacked during 2018 midterms

原文发布时间：04 Dec. 2018