Is CTCT Extension safe?

Low risk

CTCT Extension lets any web page relay DLP actions to its local service or native host.

CTCT Extension runs a content script on all sites and accepts page messages labeled DLP_IFRAME_MESSAGE without checking the page origin. It forwards page-supplied DLP actions such as file checks, AIDR checks, notifications, and heartbeats to localhost CTCT endpoints or the com.eagleyun.aidr native host, then posts the callback back to the page.

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

China Telecom Cybersecurity Technology Co.,Ltdv3.1.5Firefox Add-ons
21Risk

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 3.1.5. 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

    *://*/*

  • Run its own code inside the pages you visit

    scripting

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

    tabs

  • Talk to a program installed on your computer, outside the browser's sandbox

    nativeMessaging

  • Store data in your browser

    storage

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

    management

Where it sends data

Destinations our analysis observed CTCT Extension 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.

  • 127.0.0.1:<port>/aidr/check

    CTCT Extension sends data to 127.0.0.1:<port>/aidr/check. No other extension we have analyzed sends data here.

  • 127.0.0.1:<port>/ndlp/check

    CTCT Extension sends data to 127.0.0.1:<port>/ndlp/check. No other extension we have analyzed sends data here.

  • native:com.eagleyun.aidr

    CTCT Extension sends data to native:com.eagleyun.aidr. No other extension we have analyzed sends data here.

  • ws://127.0.0.1:<port>

    CTCT Extension sends data to ws://127.0.0.1:<port>. No other extension we have analyzed sends data here.

Updated 2 November 2026amo-2843596