![Preview of Hem and Haw](https://addons.mozilla.org/user-media/addon_icons/2892/2892523-64.png?modified=732d599a)
Hem and Haw by Tin Le
ExperimentalExperimental
Looks for HEMs and other personal information sent to third parties.
You'll need Firefox to use this extension
Extension Metadata
About this extension
About Hem and Haw:
This browser extension monitors when hashed versions of your personal data (like emails or phone numbers) are sent to third parties.
How it works:
- You enter email addresses, phone numbers, and/or other details.
- Hem and Haw creates hashes of these inputs.
- When a matching hash is detected being sent to a third party, Hem and Haw logs to our server:
Type of data (e.g., email).
Hash type (e.g., MD5).
Third party's domain.
Whether you use an ad blocker (based on your response).
What Hem and Haw does not collect:
- Your actual personal data (e.g., email addresses or phone numbers).
- URLs of the websites you visit.
- HTTP request details.
- Any other personal information.
This browser extension monitors when hashed versions of your personal data (like emails or phone numbers) are sent to third parties.
How it works:
- You enter email addresses, phone numbers, and/or other details.
- Hem and Haw creates hashes of these inputs.
- When a matching hash is detected being sent to a third party, Hem and Haw logs to our server:
Type of data (e.g., email).
Hash type (e.g., MD5).
Third party's domain.
Whether you use an ad blocker (based on your response).
What Hem and Haw does not collect:
- Your actual personal data (e.g., email addresses or phone numbers).
- URLs of the websites you visit.
- HTTP request details.
- Any other personal information.
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PermissionsLearn more
This add-on needs to:
- Download files and read and modify the browser’s download history
- Access your data for all websites
More information
- Version
- 2.1.3
- Size
- 71.59 KB
- Last updated
- 12 days ago (Jan 24, 2025)
- Related Categories
- License
- All Rights Reserved
- Version History
Add to collection
Release notes for 2.1.3
- Fixed bug where duplicate transmissions are found if hash is in URL
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