Last week Mozilla announced that two Firefox add-ons had been found to be infected by malware. This week it revealed that one of those malware reports was erroneous. Mozilla has now withdrawn the add-on from use while its status was under question. I dont think that Mozilla was wrong to withdraw it from use, but I do think there should have been a warning to be taken out of Sothink Video Downloader before it was found to have been compromised by a Trojan horse.”]
Source: https://grahamcluley.com/mozilla-admits-firefox-addon-false-alarm/