Re: IDN problem.... :(

From: John Burger (
Date: Fri Feb 11 2005 - 18:04:42 CST

  • Next message: Doug Ewell: "Re: IDN problem.... :("

    IANA et al. may eventually decide to restrict certain homographic
    registrations, as some have suggested, and I think the idea of
    detecting and flagging mixed-script IDNs has some merit. I think we
    will in fact need multiple layers of protection against these

    I am surprised that some assume that any IANA-maintained list of
    homographic characters will have to be human-maintained. As has been
    observed, whether one domain-name is homographic with another is
    font-dependent. It seems to me that it should be possible to determine
    automatically, with high accuracy, which glyphs in a particular font
    are near-homographic - it's essentially a specialized kind of OCR. The
    Unicode tables provide a head-start on this. Then the user can be
    warned if the current domain name is different from, but homographic
    with, one that they have visited before, all with respect to the
    current font. One can imagine building this into proxies, and thus
    aggregating statistics on what is the most "popular" of the

    Many improvements to this general scheme are of course possible, and it
    needs to be combined with all of the other approaches people have
    mentioned. As with many things, half a dozen 90% solutions might
    approach the mythical 100% solution.

    - John Burger

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