Contents
In short
Monitoring can warn you early but does not prevent misuse. Free checks and alerts from your password manager cover a lot; paid services are mainly worth it with extra support when something happens.
What is it?
Identity monitoring searches known data breaches and sometimes other sources for your email address, phone number or other data and reports matches.
Who is it useful for?
Anyone who wants to know early whether their credentials are affected.
What does it protect against?
- Unnoticed leaked credentials, which you can then change
- Late reaction to data misuse
What does it not protect against?
- The breach itself – your data is already out there
- Misuse that happens without a breach
- Full coverage of every source
What you can do for free
- 01Check your email address with a reputable breach checker
- 02Turn on breach alerts in your password manager or browser
- 03On a match, change affected passwords and turn on MFA
When is an extra product worth it?
Paid services can make sense if they also offer personal support with identity misuse. This is sometimes included in insurance or account plans.
What to check when choosing
- Which data is monitored and where matches come from
- What concrete help is offered in an incident
- Privacy: which data must you hand over?
We deliberately name no products and publish no rankings.
Common mistakes
- Changing only the affected account, not the same password elsewhere
- Typing passwords into dubious sites for a 'check'
Checklist
- Breach check done
- Password manager alerts on
- Affected passwords changed
Frequently asked questions
Do I enter my password for a breach check?
No. Reputable services only ask for your email address.
What do I do on a match?
Change the password for that service and every account sharing it, turn on MFA and watch for phishing.
Sources
Checked on 6 Oct 2026.