Join / Sign In CNET editors pick the products and services we write about. When you buy through our links, we may get a commission. Are my passwords on the dark web? Protect your data after a breach By the time a company tells you your data's been stolen as part of a breach, your information may already be on the dark web. Here's how to keep pace with the hackers. Listen - 04:24 Angela Lang/CNET Your personal data's been stolen, but you often won't learn about it until long after Facebook, Equifax, Marriott, Yahoo, DoorDash or some other company you've trusted with your information notifies you that your birthday, Social Security or credit card number, health records or some other piece of personal information has been exposed in a data breach.