Posts

The trace we leave when we use Wi-Fi even if we don't connect

Image
 Do you feel like the apps you use know where you've been? How can ads for a certain brand of coffee come through if you weren't even connected to Wi-Fi when you visited the store a couple of hours ago? We live in a highly connected society. Every day we have more devices connected and we connect more time and from more different locations. This poses a constant silent threat. Without being aware we leave a trail of what we do, when we do it and where we do it. The problem of privacy and security on the Internet is today more relevant than ever. There are multiple dimensions: the confidentiality of the information, the authenticity of the same and of the interlocutors. This article focuses on one aspect: how to make crawling more difficult. MAC addresses and Wi-Fi networks Devices use MAC (Medium Access Control) addresses to connect to a Wi-Fi network. These serve to identify the device on the network when it sends or receives data. For that reason, MAC addresses must be uniqu