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  1. #1
    SitePoint Enthusiast Debs's Avatar
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    Scumware is detected, can js detect Norton Firewall?

    Doxdesk.com offers js that detects parasite ware on visitors computers and directs them on how to remove it.

    Considering Norton's Firewall blocking adverts on sites that depend on their revenue, and now blocking Adsense, is it possible to write a js that would detect the use of these ad blockers and then direct the user to a page where you can choose to inform them?

    My preference is to basically say my site is supported by advertising, you don't have to click it if you don't want to, but your firewall shouldn't remove your choice without your knowledge. Then they could proceed (or something like that.

    I know nothing about js, relying on scripts written by others ... so, my question is ... is it possible? Does a script like this exist?

    Thanks for any feedback you can provide.

  2. #2
    SitePoint Wizard silver trophy KLB's Avatar
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    Here is one trick you could use, I think I've read that Norton's firewall blocks all files from specific directories that are commonly ad directories. Simply put a JavaScript in that directory that changes the value that is defined in another JavaScript in a safe location. If the value in the second JavaScript is not changed by the first JavaScript then it is likely that ads are being blocked and actions can be taken accordingly.

    Another method might be to study the Google AdSense JavaScript that is downloaded and determine if there is some stable variable that could be read from another script.

    I realize this is kind of vague, but I think it could be the foundation for an overall scheme that could be used to detect ad blocking with a little work.
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