Microsoft® Windows® Malicious Software Removal Tool (KB890830) 25-09-2010

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en

Melhor vacina para USB

http://www.pandasecurity.com/portugal/about/corporate-news/new-67.htm

http://www.pandasecurity.com/homeusers/downloads/usbvaccine/

Melhor removedor de malware e spyware

Spybot - Search & Destroy

http://www.safer-networking.org/pt/index.html

Melhor antivirus

 

http://www.avast.com/pt-br/free-antivirus-download