Because your internet traffic moves to and from your devices (computer, phone, tv, tablet) through your ISP, they can see where you go online. An ISP can see what sites you visit, how long you’re on them, your location and information about your devices. An ISP may not know the specifics of what you did on those sites (like what you bought, searched for or read) thanks to encryption, but they could make inferences about you based on the sites that you visited. That personal data can be used to create detailed profiles about you. Why would ISPs do that? In short: this data is valuable.

由於您的網路流量會透過您的 ISP 傳入或傳出您的其他裝置電腦、手機、電視、平板電腦所以他們會知道您在哪裡上網。 ISP 可以看到您造訪哪些網站、開啟這些網站多久、您的所在位置以及關於您的裝置的資訊。透過加密系統ISP 可能不知道您在這些網站做了什麼例如您買了哪些東西、搜尋了哪些東西但他們可以根據您造訪過的網站來推測您。這些個人資料可被用來建立您的詳細資料。 ISP 為什麼要這麼做簡而言之: 這些資料很有價值。