One Saturday morning, Annie Lowrey woke up to a half-dozen email alerts telling her someone had hijacked her Facebook account. She did what most of us would probably do: She contacted Facebook, got the account back and created a new password. But she was curious. Why did the hacker target her account? What did he want? So she emailed him and asked. That started a virtual friendship of sorts. Madeleine speaks to Lowrey about what she learned.