Hem and Haw

Overview

Looks for HEMs and other personal information sent to third parties.

https://tincangit.github.io/hemandhaw-study/ About Hem and Haw: This browser extension monitors when hashes of your personally identifiable information (like emails or phone numbers) are sent to third parties. How it works: - You enter email addresses, phone numbers, and/or other details, and press submit. - Hem and Haw creates hashes of these inputs. - When a matching hash is detected being sent to a third party, Hem and Haw takes note and logs to our server: Type of data (e.g., email), Hash type (e.g., MD5), Third party's hostname, Originating website's hostname, Where in the transmission (HTTP request) the hash was found, Whether you use an ad blocker (based on your response), How privacy-conscious you rate yourself (1-5, based on your response). At any point, you can stop Hem and Haw from searching for hashes and add/modify/delete the PII to search for. Additionally, you can see the log of detected transmissions, download the log as JSON, and clear the log. What Hem and Haw does NOT collect to our server: - Your actual personal data (e.g., email addresses or phone numbers) and its hashes, - HTTP request details and data, - Any other personal information. Your IP address is also not collected by our server. IMPORTANT NOTE: Hem and Haw will clear all results when you clear all history.

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Details

Version
3.5.4
Updated
July 6, 2025
Flag concern
Offered by
tin
Size
1021KiB
Languages
English
Developer
Email
tin.le@ucalgary.ca
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Hem and Haw has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Hem and Haw handles the following:

Personally identifiable information

Web history

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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