How to Check If Your Information Is on the Dark Web

If you've used the internet for more than a few years, some of your personal information is almost certainly on the dark web. The question isn't whether you've been exposed—it's how much, and what you should do about it. Here's how to find out and what to do next.

What Is the Dark Web, Really?

The dark web is a small part of the internet that requires special software (like Tor) to access. It hosts everything from legitimate whistleblower platforms to illegal marketplaces where stolen data is bought and sold.

When hackers breach a company, the stolen data often ends up on dark web forums or marketplaces. Criminals buy it in bulk to commit identity theft, account takeovers, and phishing attacks. Your email, password, phone number, Social Security number, credit card details, and even medical records can all be circulating right now.

Step 1: Check Your Email With Have I Been Pwned

haveibeenpwned.com is the most trusted free tool for checking if your email address or phone number has appeared in known data breaches. Run by security researcher Troy Hunt, it indexes billions of leaked records from hundreds of confirmed breaches.

1. Go to haveibeenpwned.com
2. Enter your email address
3. Review the list of breaches your email was found in
4. Repeat for every email address you've ever used
5. Check "Pwned Passwords" to see if specific passwords are known-compromised

If you find your email on the list, assume every password you used for those sites is compromised—even if the breach only leaked hashed passwords. Attackers have cracked most hash formats by now.

Step 2: Check Passwords and Usernames

Beyond email, check usernames you commonly use. Tools like:

• Have I Been Pwned: Pwned Passwords feature
• Mozilla Monitor: monitor.mozilla.org (uses HIBP data plus additional scans)
• Google Password Checkup: Built into Chrome and Google Account
• Apple Keychain: iCloud Keychain alerts you to compromised passwords automatically

Step 3: Check Your Phone Number

Phone numbers are increasingly leaked in breaches. HIBP indexes them when available. You can also check whether your number has appeared in the infamous Facebook 533-million-user leak by searching "Facebook phone number leak" + your number on Google.

Step 4: Monitor Credit Reports and Financial Accounts

If your Social Security number or financial information is on the dark web, identity thieves will use it to open new accounts. Check your credit reports from all three bureaus (free at annualcreditreport.com) for any unfamiliar accounts. Sign up for alerts on existing credit cards and bank accounts.

Step 5: Set Up Ongoing Dark Web Monitoring

One-time checks are a starting point, but new breaches happen constantly. The average company takes 277 days to discover it's been breached—meaning your data could be on sale for months before you hear about it.

PrivacyOn includes 24/7 dark web monitoring across your email addresses, phone numbers, credit card numbers, SSN, driver's license, and more. When any of your information appears in a breach, paste site, or hacker forum, we alert you immediately with guidance on what to do. Combined with our data broker removal across 100+ people-search sites, PrivacyOn gives you both prevention (making you harder to find) and detection (catching leaks fast).

What to Do If Your Information Is on the Dark Web

If Your Email Was Exposed

1. Change the password for that email immediately
2. Enable two-factor authentication
3. Change passwords on any other accounts that used the same password
4. Check for unrecognized forwarding rules or filters
5. Review recent sent messages for signs of compromise

If Your Password Was Exposed

1. Change that password everywhere you used it
2. Start using a password manager to generate unique passwords
3. Enable 2FA on every account that supports it

If Your SSN Was Exposed

If Your Credit Card Was Exposed

1. Call the card issuer and request a new card number
2. Dispute any fraudulent charges
3. Review recent statements carefully
4. Check for related accounts—thieves often try multiple cards

If Your Phone Number Was Exposed

1. Contact your carrier and add a PIN to your account to prevent SIM swaps
2. Watch for smishing (SMS phishing) attempts
3. Expect an uptick in spam calls—consider changing your number

Step 6: Reduce Future Exposure

Finding your info on the dark web is a wake-up call. Reduce your future exposure with these practices:

• Use email aliases (SimpleLogin, Apple Hide My Email, Firefox Relay) so each site has a unique email
• Use a password manager with unique passwords for every account
• Enable hardware-key 2FA on your most important accounts
• Freeze your credit permanently until you need it
• Remove yourself from data brokers to reduce the surface area exposed in future breaches

The Long Game

You can't undo a breach. Once your information is on the dark web, copies will keep circulating forever. What you can do is make that information less useful to criminals—by rotating credentials, using unique emails, and closing the data broker loopholes that connect leaked data to your current address.

PrivacyOn combines continuous dark web monitoring with data broker removal so you get both sides of the protection equation. If you haven't checked your exposure in a while, now is the time.