Malware focusing on the social network's users in Brazil masquerades as a legitimate Google Chrome extension and Firefox add-on.



From CNET:

Microsoft has issued a warning that a new piece of malware masquerading as a Google Chrome extension and Firefox add-on is making the rounds, threatening to hijack Facebook accounts

First detected in Brazil, Trojan:JS/Febipos.A attempts to keep itself updated, just like normal, legitimate browser extensions, Microsoft noted in a security bulletin late Friday.

  Microsoft warns of new Trojan hijacking Facebook accounts