Is Kwanko toolbox safe?

Medium risk

Kwanko toolbox sends failed-login API keys to Google Analytics as an event label.

When a user enters a Kwanko API key in the popup login and validation fails, the extension includes that key in the Google Analytics event label for the failed login. The data is posted to www.google-analytics.com/collect from this user-initiated login path.

contact.developper@kwanko.comv2.4.3Chrome Web Store
45Risk
Who publishes it

Kwanko - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
contact.developper@kwanko.com
Declared legal entity
Kwanko
Registered address
60 Boulevard du Maréchal Joffre, Bourg-la-Reine 92340, FR
Registered contact
Kevin Hatry

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Findings

Failed login sends the entered Kwanko API key to Google Analytics

When you enter a Kwanko API key in the popup and login fails, the extension includes that key in a Google Analytics event label.

The request goes to www.google-analytics.com/collect; the affected data type is credentials.

Severity
Medium unwanted
Type
Unexpected
CWE
CWE-522
Source
Dynamic sandbox
What actually happens
You did this

The user submits a Kwanko API key in the extension popup and the login attempt fails.

The extension did this

The extension sends a failed-login Google Analytics event whose label includes the entered API key.

Captured request
POSThttps://www.google-analytics.com/collect
Fields in the request
  • Your Kwanko API key
    kwanko-api-key-12345 (illustrative)

    This credential can authorize account or API access, so putting it in an analytics label exposes login material outside the login flow.

What it can do

Permissions this extension asks for, as declared in version 2.4.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on kwanko.com

    *://*.kwanko.com/

  • See the address and title of every tab you have open

    tabs

  • Store data in your browser

    storage

  • Schedule its own background tasks

    alarms

Where it sends data

Destinations our analysis observed Kwanko toolbox contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • www.google-analytics.comwidely used

    Kwanko toolbox sends data to www.google-analytics.com. A widely used service: 346 other extensions we have analysed send data here.

Updated 30 September 2026eamgekcmmkddbppgoadpncaeimpngmhn