 You're probably careful with your personal information, but what about the other places that have it? Like the doctor's office that mixed up your files. They have your social security number. The power company that mistakenly cut your service has your payment info and last three addresses. And the hotel that lost your reservation has your passport info. Your information is in endless places outside of your control. Any one of them could accidentally expose you to hackers and identity theft through lax security breaches or simple mistakes.