4 Using Public Wi-Fi
Free and public Wi-Fi networks are precarious from a security standpoint, but they can also impact your digital privacy. If you need to enter any contact details to log into a Wi-Fi network, you should be worried.
That’s because many of those free Wi-Fi networks may be used to collect data to target advertisements — that’s part of the reason why they’re free. This won’t apply to all free Wi-Fi, but in the cases in which it does, harvested data includes the fact that you connected to a particular Wi-Fi network in a specific location, and sometimes the specific sites that you visit.