https://addons.mozilla.org/extensions/moreinfo.php?application=firefox&id=722
NoScript will place a warning bar at the bottom of all the Web pages you visit using JavaScript.Click on this bar to see the Script options of each page (either temporary or permanent), block scripts, and other activities such as blocking animated clips with Flash installers in Firefox.
Step7. Handle the links in your mail carefully: If your computer is infected with a virus, it is most likely via your email.To reduce the risk of e-mail, do not click on links to suspicious messages (paragraphs of text can hide the actual Web address).So, you should manually type the address of that website manually, browse the links in that Web site carefully.
Step 8. Scan the attached files for viruses: Run an antivirus program through each attachment before you open them.You should not double-click the attachment to open it directly, you should save the file to the hard disk on your computer.Open Windows Explorer, right-click the file name and select "Scan it for virues" option, this option name may differ depending on the antivirus program you are using.The best way is to choose to scan all messages sent and received automatically.
Step 9. Close the preview pane: Some malicious messages only need you to open them in the preview pane of your mail program that they can activate.Therefore, we strongly recommend closing this preview pane.In Outlook Express: Select View -> Layout -> remove the Preview Pane option.In Microsoft Outlook 2003, click View -> Reading Pane-> Off.In Mozilla Thunderbird, click View -> Layout button and confirm uncheck "Message Pane" (faster than you just need to press F8).
Step 10. You should read messages in raw text mode: Because many harassing messages depend on HTML code to achieve bad intrigue, you can block them by just viewing raw text messages.In Out look 2003, select Tools -> Options -> Read and select "Read all standard mail in plain text."In Outlook Express 6, select Tools -> Options -> Read and select "Read all messages in plain text."In Mozilla Thunderbird, select View -> "Message Body As" -> "Plain Text".
Download address of tools:
Firewall: Zone Labs ZoneAlarm, free (personal, missing some features compared to subscriptions).
http://www.pcworld.com/downloads/file_description/0,fid,7228,tk,srx,00.asp
Virus Removal: AVG of Anti-Virus System, free (non-commercial)
http://free.grisoft.com/softw/70free/setup/avg70free_344a618.exe
Information encryption: PGP's PGP Desktop 9 costs $ 199 or $ 70 if registered for a year.
http://www.pgp.com/products/desktop/index.html
Minh Phuc