Last month, a lawsuit alleged that a background-check company left as many as three billion records exposed \u2013 putting new attention on credit freezes. Wall Street Journal personal finance reporter Imani Moise tells host J.R. Whalen about how this free safeguard could protect you from identity thieves.\n\n\xa0\n\nSign up for the WSJ's free Markets A.M. newsletter.\xa0\n\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices