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Re: Security when connecting to cable modem via USB
A USB connection to the modem is effectively a network card that plugs into a USB port. As far as the PC is concerned its the same thing, so the same precautions apply.
USB does typically use more CPU power than PCI Ethernet cards do. As these cards are very cheap (an RTL8139 based one will do) why not get her one and shove it in the PC?
If what you want is to stop her getting viruses, stop her using IE and Outlook. Firefox and Thunderbird are probably the best solutions here. AVG will check all e-mails that Thunderbird recieves thus greatly reducing the risk of infection.
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