Greetings, I am a pfrivate Internet security researcher. I have carefully isolated and verified a set of exactly 45,500 domain names which, from the look of them, are all quite likely to be in use as components of a very large scale Tech Support Scam farm. (This operation has apparently been ongoing for more than a year.) I think that it would be a Good Thing if some appropriate person could arrange for these domains to all be flagged as fradulent when and if any Firefox user happens to come upon them while browsing. You may view the entire list of domains here: https://pastebin.com/raw/e1K644jw Current forward DNS resolutions for these domains are shown here: https://pastebin.com/raw/vLNjUQv8 Note that unless you visit the web sites associated with any of these domains while using a "correct" full (coded) URL, the web sites will simply redirect you to the Google home page. This, of course, is part of the the scammer's technique to avoid and evade detection and investigation of these scam domains. In addition to this set of scam domains, I have several other and additional such sets for which it would be useful and helpful to have Firefox flag these domains as untrustworthy for the benefit of the entire end user community. Also, I come upon new sets like this on a regular basis. I am already providing this data to the Google Safe Browsing team, but would like to be able to routinely supply it to appropriate representatives of the Mozilla project aas well. Please let me know if this is something that the Mozilla Project would have an interest in.