Is GuardExt safe?

Clean risk

GuardExt checks installed extension IDs against Google's Chrome update service when the user starts a scan.

When the user runs a scan, GuardExt enumerates installed browser extensions and reviews details such as their ID, name, version, install type, permissions, and host permissions. For non-development and non-sideloaded extensions, it sends each extension ID to Google's Chrome update service to check whether Google recognizes the extension.

balaenatechv1.0.4Chrome Web Store
0Risk
Who publishes it

BalaenaTech Co., Ltd. - no other listings under this identity, 3 shared hostnames

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

Publisher
balaenatech
Declared legal entity
BalaenaTech Co., Ltd.
Registered contact
株式会社バラエナテック

Shared hosts - 3 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

scotthelme.co.uk
Also called by 4 other listings, including GitLab Markdown Viewer
malwarebytes.com
Also called by 5 other listings, including Malwarebytes Browser Guard, Malwarebytes Browser Guard
chrome-stats.com
Also called by 6 other listings, including Jet SEO, Extension Guard

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

Publishers can request a review.

Where it sends data

Destinations our analysis observed GuardExt 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.

  • clients2.google.com

    GuardExt sends data to clients2.google.com. No other extension we have analysed sends data here.

Updated 30 September 2026okofagphbpbgnennblfkgdlclfmkadie