David is worried that his account may have been hacked as part of the big Yahoo hack. Leo says it could have, and he should change his password immediately. Yahoo is notoriously terrible with their email security and no one knows if it'll improve when Verizon buys it. Leo advises opening up a GMail account and then set it to get his Yahoo Mail. He can then move all his old email over, disconnect Gmail from Yahoo, and delete everything from his Yahoo account.