Social networking service Twitter has agreed to settle Federal Trade Commission charges that it deceived consumers and put their privacy at risk by failing to safeguard their personal information, the FTC said yesterday. The FTC’s complaint against Twitter charges that serious lapses in the company’s data security allowed hackers to obtain unauthorized administrative control of Twitter, including access to nonpublic user information, tweets that consumers had designated private, and the ability to send out phony tweets from any account — including those belonging to then-President-elect Barack Obama and Fox News.