As part of its password manager service, Google offers the free Password Checkup tool, which monitors usernames and passwords you use to sign into sites outside of Google's domain and notifies you if those login credentials have been exposed. (You may remember Password Checkup when it was a Chrome extension you had to add separately to Google's browser. This is the same tool folded into Google's password manager.)

Google's Password Checkup finds a few password problems.

1. If you use Google's password service to keep track of your login credentials in Chrome or Android, head to Google's password manager site and tap Go to Check passwords.

2. Tap Check Passwords and verify it's you.

3. Enter the password for your Google account.

4. After thinking for a bit, Google will display any issues it's found, including compromised, hydraclubbioknikokex7njhwuahc2l67lfiz7z36md2jvopda7nchid.onion reused and weak passwords.

5. Next to each reused or weak password is a Change password button you can tap to pick a more secure one.

How to use Mozilla's Firefox Monitor 

Mozilla's free Firefox Monitor service helps you track which of your email addresses have been part of known data breaches. 

1. To start, head to the Firefox Monitor page.

Mozilla's Firefox Monitor identified 4 breaches for this email.

2. Enter an email address and tap Check for Breaches. If the email was part of a known breach since 2007, Monitor will show you which hack it was part of and what else may have been exposed.

3. Below a breach, tap More about this breach to see what was stolen and what steps Mozilla recommends, such as updating your password.

You can also sign up to have Monitor notify you if your email is involved in a future data breach. Monitor scans your email address against those found data breaches and alerts you if you were involved. 

1. Near the bottom of the Firefox Monitor page, tap the Sign up for Alerts button.

2. If you need to, create a Firefox account.

3. Tap Sign in to see a breach summary for your email. 

4. At the bottom of the page, you can add additional email addresses to monitor. Mozilla will then send you an email at each address you add with a subject line "Firefox Monitor found your info in these breaches" when it finds that email address involved in a breach, along with instructions about what to do about following the breach.

How else to watch for fraud

Besides the tools from Mozilla and Google, you can take a few additional steps to watch for fraud.

Monitor your credit reports. To help you spot identity theft early, you request one free credit report a year from each of the three major credit bureaus -- Equifax, Experian and Equifax was itself part of a massive data breach.) You should also check your credit card and bank statements for unexpected charges and payments. Unexpected charges can be a sign that someone has access to your account.

Sign up for a credit monitoring service. To take a more active hand in watching for fraud, sign up with a credit monitoring service that constantly monitors your credit report on major credit bureaus and alerts when it detects unusual activity. With a monitoring service, you can set fraud alerts that notifies you if someone is trying to use your identity to create credit. A credit reporting service like LifeLock can cost $9 to $26 a month -- or you could use a free service like the one from Credit Karma that will watch for credit fraud but not ID fraud, such as someone trying to use your Social Security number.

For more on how to keep your data secure, see our guides on how to protect your phone's privacy, the best VPN services of 2021, and why you should never trust a free VPN.