| They should ensure they have up-to-date anti-virus software and personal firewalls. |
| It didn't have the latest patches and anti-virus signatures, so when he connected it to his cable modem at home, it became infected. |
| Horrified, he erased the hard disk and started from scratch with new anti-virus software. |
| I don't run an anti-virus or spellcheck program, and I don't believe in installing patches or defragmenting my hard drive. |
| Many anti-virus vendors also make scanners available as a Web service application. |
| Users are advised to use personal firewalls and anti-virus defences to defend against infection. |
