Mozilla confirmed this week that they were not capable of detecting malware disguised as two add-ons for Firefox: Sothink Web Video Downloader 4.0 and Master File. According to the company, the trojan horses infected about 6,600 PCs, but they were already removed from the official add-ons site for Firefox.

You may read more about this matter here:

• http://news.cnet.com/webware/?keyword=Trojan
• http://www.baboo.com.br/conteudo/modelos/Mozilla-hospeda-malwares-disfarcados-como-add-ons_a37889_z410.aspx
• http://www.wizcrafts.net/blogs/2009/11/mozilla_firefox_updated_to_version_355.html
• http://news.cnet.com/8301-13880_3-10081925-68.html?tag=mncol;title