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Hillary Clinton’s e-mails: a timeline of actions and regulations - The Washington Post

June 29, 2011: A State Department cable to employees is issued under Clinton’s signature (as are all cables) after Google revealed that hackers were targeting the personal e-mail accounts of U.S. government employees. The cable warns: “Avoid conducting official Department business from your personal e-mail accounts.”
Within a few hours, the cross-site scripting (XSS) attack caused at least 37,000 84,700 users to retweet a single message originally transmitted by the user @derGeruhn. The body of the message contained JavaScript commands that caused anyone viewing it in TweetDeck to automatically retweet it. The message spread virally. The more times it was retweeted, the more times it was viewed and retweeted by other people using the vulnerable app. The BBC News Twitter account alone pushed the message to 10.1 million followers.