The Finnish security vendor said the services are for small to midsize ISPs and their private customers. The services are PC Protection, which includes virus and spyware detection and a firewall, and PC Protection Plus, which adds a parental and spam control features.

The two client-side services do not require integration with an ISP's system. Users will be able to download the software from an ISPs Web site, and daily updates are sent out to update virus signatures, said Karin Mikluha, program manager for F-Secure.

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