Is STUDY4 safe?

Low risk

STUDY4 lets webpages trigger extension-privileged dictionary lookups to its configured dictionary providers.

The extension injects a web-accessible dictionary frame into pages and accepts lookup requests sent with postMessage without checking the sender origin. A page can supply a term that the extension fetches from configured dictionary services; the response is not returned to the page through this path.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

15Risk
Who publishes it

A PLUS TECHNOLOGY CO.,LTD - 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
STUDY4
Declared legal entity
A PLUS TECHNOLOGY CO.,LTD
Registered address
Số 15, Ngõ 208, Giải Phóng, Thanh Xuân, Hà Nội, Hà Nội 100000, VN
Registered contact
STUDY4

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

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.5. 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 glosbe.com

    https://glosbe.com/*

  • Read and change your data on dictionary.cambridge.org

    https://dictionary.cambridge.org/*

  • Read and change your data on dict.laban.vn

    https://dict.laban.vn/*

  • Read and change your data on www.thesaurus.com

    https://www.thesaurus.com/*

  • Read and change your data on ozdic.com

    https://ozdic.com/*

  • Read and change your data on study4.online

    https://study4.online/*

  • Read and change your data on study4.com

    https://study4.com/*

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed STUDY4 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.

  • dict.laban.vn

    STUDY4 sends data to dict.laban.vn. One other extension we have analysed sends data here.

  • dictionary.cambridge.org

    STUDY4 sends data to dictionary.cambridge.org. One other extension we have analysed sends data here.

  • glosbe.com

    STUDY4 sends data to glosbe.com. No other extension we have analysed sends data here.

Updated 30 September 2026jefmonmbihnpfebehladbckmmfjncabp