Extensive tests, carried out by technology magazine “PC Pro,” have revealed that only three of the 15 most popular web filtering services - both free and paid-for - actually blocked 100% of porn sites the testers tried to visit. This means 80% of packages are leaving children potentially at risk of viewing adult material while they browse the web. Norton Family was the best performing package of the lot and was the PC Pro Labs Winner. PC Pro also recommended Blue Coat's K9 Web Protection kit. The worst performing sites in tests were MetaCert and OpenDNS Basic. They blocked a total of 88% and 60% of porn sites respectively - all other sites scored above 90%.PC Pro's Technical Editor Darien Graham-Smith said: “The results of this month’s web-filter tests aren’t exactly reassuring. Time and again we saw graphic pornography sail through supposedly strict filters, while harmless news and reference pages were blocked.Such failures shouldn’t be a surprise. No doubt some human intelligence feeds into the filtering process, but with more than 600 million websites in existence, and an estimated 100,000 new onesspringing up every day, it simply isn’t possible to inspect every site manually.”
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