People are often not aware that privacy is synonymous with security on the Internet. Now, 100% privacy does not exist, but we must differentiate between what any page we visit can find out, mainly technical data, such as our public IP if we do not use a VPN, but which allows the page to be presented in our language, why The public IP reveals the country in which we live, but not our exact location, only that of our ISP service, which may be hundreds of km away. Also data such as our OS, mobile or PC, which allows the page to adjust the format.

Another different thing is our private data, this is what must be protected on the front line, since a leak as has already happened on several occasions, where hundreds of thousands of sensitive data were leaked, including banking and medical data. Protecting these depends primarily on our common sense and discretion on the network. We cannot prevent authorities from accessing this data that our ISP, Doctor or Bank may provide them if there is a court order for this, but we can prevent individuals or companies from tracking and profiling us in order to sell this data to third parties ( urveillance advertisings), since in this case we have no control over how this data is processed and protected in the hands of third parties, it is precisely there where these massive data leaks occurred.

Countermeasures, apart from our own caution and discretion as the most important thing, there are all kinds of measures such as ad/trackerblocker, VPN (especially with public WiFi) and others, not using the mobile phone for banking transactions (convenient, but a mobile phone can never offer the same security such as from a PC, or better to do the procedures in person), use long passwords and 2FA, or better a physical key, such as a pendrive, although it is annoying, ALWAYS read the TOS and PP of a software or service, (even if it is FOSS!), there we can discover the biggest surprises that we later regret.

Use tools, such as Exodus and InVizible Pro on Mobile, Blacklight, Webkoll, Portmaster, PiHole, etc., to find out who is looking over your shoulder using an app or service, test your browser with Browserleaks, to see the holes it may have, adjust it accordingly, and never use search engines that log and track activity.