Matt Drudge wondered aloud Thursday evening whether his popular site was the object of a U.S. government cyberattack. Via the Twitter account for his Drudge Report, he said his news-aggregation site is the victim of the “biggest DDoS since site’s inception,” referring to a Distributed Denial of Service attack. “Is the US government attacking DRUDGE REPORT?” he asked, adding that there was “VERY suspicious routing [and timing].” In a later tweet, Mr. Drudge said the “Attacking [was] coming from ‘thousands’ of sources. Of course none of them traceable to Fort Meade,” referring to the Maryland base that houses the headquarters of United...