Works on Linux. Rated 4 out of 5 stars

This extension works flawlessly on my Debian desktop.
Though I'm not sure it's really meaningful to install this extension on Unix like OS's as BitDefender says this extension is for Windows.

But at least I can know a site/page is potentialy malicious or not, which is a good thing.

This review is for a previous version of the add-on (0.1.24). 

The TrafficLight extensions are not just for Windows

Hello,

You probably read the description for the full TrafficLight product which indeed works only for windows and is available at traffic light.bitdefender.com . The extensions are only browser dependant and will work without any issues on Debian.