When a device connects to a Wi-Fi network, the network administrator, or owner, gains access to certain data regarding the device’s activity. This access enables them to observe website domains visited and the volume of data transmitted. It’s important to note that while they can see the websites accessed, the specific content of encrypted communications, such as within a secure HTTPS session, remains hidden. For example, a network administrator could determine that a user visited ‘example.com,’ but not the specific pages browsed or information entered into forms on that site if it uses HTTPS.
Understanding network visibility is crucial for both security and privacy. Knowledge of this access can empower users to make informed decisions about their online behavior when connected to different networks. Historically, the level of visibility on network traffic has evolved alongside advancements in encryption technologies and data privacy regulations. These factors have collectively shaped the landscape of network monitoring and user privacy expectations.
