Is Fat cat screenshot safe?

Medium risk

Fat cat screenshot routes Chrome update checks through agency.pictureknow.com when its update test fails.

The background worker checks for a newer version and, if Google's update host cannot be reached, installs a PAC proxy for clients2.google.com and clients2.googleusercontent.com. Chrome extension-update requests to those Google hosts, including URLs and request headers, are then routed through agency.pictureknow.com. Separately, the popup lists installed extensions and provides controls to disable, enable, or uninstall them.

tomxuxuv1.0.5Chrome Web Store
50Risk
Who publishes it

tomxuxu - 9 other listings from the same operator, 4 of them carrying a finding

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

Publisher
tomxuxu

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

Publishers can request a review.

Findings

Popup manages installed extensions from the screenshot extension UI

When you open the Fat cat screenshot popup, it can list your installed extensions and show whether each is enabled.

It can also enable, disable, or start an uninstall flow for them, though its listing only describes screenshot features.

Severity
Medium unwanted
Type
Unexpected
CWE
CWE-506
Source
Dynamic sandbox
What actually happens
You did this

The user opens and interacts with the extension popup.

The extension did this

The popup enumerates installed extensions and offers controls to enable, disable, or uninstall them.

Fields available to the popup
  • Installed extension data
    Password manager extension: enabled (illustrative)

    Shows which extensions are installed in the browser and whether each one is enabled or disabled.

What it can do

Permissions this extension asks for, as declared in version 1.0.5. 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 every site you visit

    <all_urls>

  • Add items to the right-click menu

    contextMenus

  • Schedule its own background tasks

    alarms

  • Route all of your browsing through a server of its choosing

    proxy

  • See, disable and uninstall your other extensions, including your security ones

    management

  • Run its own code inside the pages you visit

    scripting

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed Fat cat screenshot 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.

  • agency.pictureknow.com

    Fat cat screenshot sends data to agency.pictureknow.com. 7 other extensions we have analysed send data here.

Updated 30 September 2026cdddgmgngjghgafknpngbifganipdinf