Security & privacy tools / Data breach checker3 tools
Best data breach checkers
Find out whether your email or password has leaked. Facts come from each tool's own pages, and every score says where it comes from. How we rank
- Tools
- 3
- Researched
- 2
- Free option
- 2
- Only listed
- 1
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works
Want two of these head to head? Compare tools side by side.
Details and sources
- Free tier
- Data breach monitoring protection is always free. The page says: “We believe in your right to privacy, so data breach monitoring protection is always free.”
- Paid plan
- Not stated.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
- 2Free optionSignup unclearFile handling unclearHealth 4.6Community 3.2
Details and sources
- Free tier
- HIBP delivers a range of free and paid services to individuals and organisations anywhere in the world to help them determine if they have been impacted by a data breach. The page says: “HIBP delivers a range of free and paid services to individuals and organisations anywhere in the world to help them determine if they have been impacted by a data breach so they can effectively respond and protect themselves and the information.”
- Paid plan
- HIBP delivers a range of paid services to individuals and organisations. The page says: “HIBP delivers a range of free and paid services to individuals and organisations anywhere in the world to help them determine if they have been impacted by a data breach so they can effectively respond and protect themselves and the information.”
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Superlative securely stores the personal information we hold in a Western United States of America Microsoft Azure data centre. The page says: “Superlative securely stores the personal information we hold in a Western United States of America Microsoft Azure data centre.”
From the tool's own pages, checked 2026-11-08. Sources: Privacy. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.
Also listed (1, not yet tested)
Each of these answered when we visited its site. We have not tested them or recorded facts, so they are in alphabetical order, not ranked.
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