Is it possible for internet service providers to act not only as portals but also as guardians of these portals? In other words, instead of the somewhat stressful, random, and constantly challenged efforts at security made by individual PC users, ISPs would be totally responsible for the security of their customers while accessing the internet. Alex Ward
It is possible for ISPs to work as gatekeepers or even provide what the IT industry calls remote desktop management, but it could be expensive and risky. Many ISPs, including BT, Telewest, NTL and Tiscali already offer spam and virus filtering (though this may involve downloading a free anti-virus package). However, there is a grey area between obvious spam and legitimate mass mailings, such as newsletters, where blocking can cause problems. In the US, for example, AOL once blocked some acceptance letters sent to prospective students by Harvard University. Also, while it is possible to strip out well known virus attachments, there are always new ones appearing, and new ways of hiding malware.
Simple filtering is cheap and reduces the problem, but still requires users to run their own security systems and remain vigilant. Being totally responsible for a "guaranteed clean" service is much more difficult, much more expensive, and is bound to lead to arguments about "false positives" when legitimate emails and files are blocked. Offering remote desktop management is even harder because viruses and other malware can come from "drive by" installations from websites, and from thumb drives, CDs and other sources not under the ISP's control. However, managed services are becoming more common in the business market, and could appeal to home PC users willing to put up with the restrictions and pay the price.
