Hem and Haw icon

Hem and Haw

Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

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

Users
39
−3 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#119K
#99K among extensions
Version
3.7.0
updated 30 Dec 2025

Users

monthly, 16 months
04487Jun 2025Mar 2026Oct 2026
Latest, 15 Oct 2026: 39 usersMove the mouse over the chart for any month

Ratings count

monthly, 16 months
001Jun 2025Mar 2026Oct 2026
Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Hem and Haw

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: 1. You enter email addresses, phone numbers, and/or other details, and press submit. 2. Hem and Haw creates hashes of these inputs. 3. 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, - HTTP Referer, - User Agent, - Whether you use an adblock, your self-reported browser and your self-reported privacy-consciousness score 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. You can use Hem and Haw to see where your hashed PII is being sent from and to! 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. Data collection is approved as part of a University of Calgary research study: REB25-0355. Note: As of now, the study is over. Data collection is currently disabled.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days−3−7.1%00.00
6 months−10−20.4%00.00
1 year−7−15.2%00.00

Version history

10 versions recorded
3.7.030 Dec 2025
3.6.723 Oct 2025
3.6.521 Oct 2025
3.6.316 Oct 2025
3.6.223 Sep 2025
3.6.121 Sep 2025
3.6.020 Sep 2025
3.5.516 Aug 2025

Details

Category
Privacy & Security
First seen
27 Jun 2025
Size
1.5 MB
Languages
en
Pricing
Free
Privacy policy
tincangit.github.io
Extension ID
cohhnfmlkkancdkcooidfhanchcjljbf

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
activeTabstoragedownloadshistorytabswebRequestwebNavigation
Site access
<all_urls>
Can read and change data on every website you visit.

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