Is Bitdefender TrafficLight for Firefox safe?

Clean risk

Bitdefender TrafficLight for Firefox sends every visited URL to Bitdefender's cloud servers for real-time threat classification.

On each tab navigation, the extension POSTs the full URL to nimbus.bitdefender.net for phishing and malware checks, building a record of browsing activity on Bitdefender's servers. On Facebook and Messenger, a content script reads message text from the DOM and relays it through a native messaging channel to the Bitdefender desktop application for scam-link scanning. Facebook sponsored-post data — including ad IDs, advertiser names, and redirect URLs — is also extracted and forwarded to Bitdefender's cloud for malvertising analysis.

Bitdefenderv3.4.3Firefox Add-ons
3Risk
Who publishes it

Bitdefender - no other listings under this identity, 2 shared hostnames

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

Publisher
Bitdefender

Shared hosts - 2 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.

trafficlight.bitdefender.com
Also called by 2 other listings, including TrafficLight
nimbus.bitdefender.net
Also called by 4 other listings

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 3.4.3. 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 every site you visit

    http://*/ and 1 more

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

    tabs

  • Schedule its own background tasks

    alarms

  • Store data in your browser

    storage

  • Run its own code inside the pages you visit

    scripting

  • Watch every request your browser makes

    webRequest

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

    nativeMessaging

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

Where it sends data

Destinations our analysis observed Bitdefender TrafficLight for Firefox 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.

  • nimbus.bitdefender.net

    Bitdefender TrafficLight for Firefox sends data to nimbus.bitdefender.net. 3 other extensions we have analyzed send data here.

  • Bitdefender native desktop app (com.extension.av.communication)

    Bitdefender TrafficLight for Firefox sends data to Bitdefender native desktop app (com.extension.av.communication). Named as a recipient in this extension's own analysis.

Updated 2 November 2026amo-308561