User generates mzroute.js error

Question

Somebody know what is this

 https://srv.mzcdn.com/mzroute.js

used for? Google told me practically nothing, but one of my users generated about 800 error messages with this address.

Answer 1

I have similar problem, my web application code was corrupted (only in Chrome) because something has automatically added these two scripts into head:

<script type="text/javascript" async="" src="https://srv.mzcdn.com/mzapp.js"></script>
<script type="text/javascript" async="" src="https://srv.mzcdn.com/scripts/_wildcard.js?384463"></script>

In my case, this was added by chrome extension "Smiley Bar for Facebook", so you or one of your users have this or similar extension installed... definitely uninstall this crap

Answer 2

Looks like it came from a browser's extension from superfish.com

Not sure if it's malicious but be careful

EDIT : based on some several new search some others extension generate the same error and most of them are considered as crapware