[header] How to manually remove the flashback trojan virus [title] Create a non admin account in your mac. [step] And use it for daily purpose like checking emails and surfing internet (the account that is generally created by default and you use has admin rights). [title] Download and use a secure browser. 
[step] It is recommended to use google chrome as it got a sandboxing plus and it also comes with a sandboxed flash player of its own. [title] After you have downloaded and installed the new browser don't forget to make it your default browser.