Whether you know it or not, you've been hacked — probably several times by now.
You are in good company: There have been 6,467 data breaches since 2005, compromising 879,889,874 records, according to Identity Theft Resource Center. So what should you do when you first learn that your personal information may have been stolen by criminals?
"It sounds counterintuitive, but you don't want to panic," said Matt Ehrlich, vice president of fraud and identity product strategy at credit reporting agency Experian.
Here are five pro tips from people in the business of protecting information.