Hi, no idea but it would be something that would send some info back to Mozilla for the development of something. We do not get that info here and we do not know when those are put in.

Can help you turn it off though. Mozilla experiment, called 'Shield Studies'. Without even knowing it, you may have volunteered for this Mozilla experiment. Would you go to : Options => Privacy & Security => under 'Data Collection and Use' : Did you uncheck : 'Allow Firefox to install and run studies ' or is it checked  ?

To check if you are enrolled in these studies :

Type in the address bar about:studies

Any extensions that you see listed there, you can either disable or remove, just like this TAAR Experiment v2 Shield Study (at the end of the experiment they will be disabled anyway).

See for further information : https://support.mozilla.org/en-US/kb/shield

Please let us know if this solved your issue or if need further assistance.

hi, it appears to be a study around recommending extensions: https://bugzilla.mozilla.org/show_bug.cgi?id=1428308 https://github.com/mozilla/taar