For maximum protection we recommend you also installPC anti-virus software and a firewall. These are included in the BT Yahoo! Online Protection suite which comes as standard with BT Broadband options 2, 3 & 4.
If you don't wish to upgrade yet, you can buy BT NetProtect firewall and anti-virus for a low monthly fee.
Please note: No security program is 100% effective, and not all viruses and spyware can be detected and/or removed. Please remember that there are risks associated with activities such as downloading and sending attachments through email, using external computer disks and drives, and installing programs from questionable sources on your computer. As provided in the Yahoo! Terms of Service, neither Yahoo! nor its licensors are responsible for your decision to undertake any of these activities.