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Replace Adsense ads on firewall

Discussion in 'Black Hat SEO' started by vpnguru, Jul 10, 2016.

  1. vpnguru

    vpnguru Registered Member

    Jan 17, 2016
    Likes Received:
    While I was in Emirates flight, I used their Wifi and I saw they replace AdSense ads in websites(Every website I visited with their own WiFi network) with their own ads.

    How do they do that?