mab_bond, Follow the Removal Instructions at the link below.
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.hackdefender.html
More possible solutions at the search link below.
http://www.google.com/search?hl=en&ie=UTF-8&q=Backdoor.HackDefender&btnG=Google+Search
Tufenuf
Hi, I hope somebody could help, I don't know how did I get the Backdoor.HackDefender, I've tried several times to get rid of it, I have Norton Antivirus 2004 installed with the latest virus definition, if found the virus and eliminated it, but every time I try to open a program such as Norton Antivirus, or Regedit they close after a few seconds I guees it's due to the virus, what can I do in order to solve this? Who could help me?

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