Whenever you connect to web pages (websites), χρησιμοποιώντας ένα πρόγραμμα περιήγησης, μια κινητή application ή ένα πρόγραμμα που υποστηρίζει συνδέσεις στο Internet, οι πληροφορίες σας αποθηκεύονται αυτόματα κάπου στο διαδίκτυο.
Every time a device or program connects you to the so-called header, your information is sent to the server you are connected to. As you can see in the image below, each page you log in can "see" your IP, where you are coming from (referer) what browser you are using, your operating system, whether it is 32 or 64bit, and the location you are at.
Some sites use the information to show different types of content to their visitors, or to prevent them from using some operation of the site.
There are other methods for retrieving additional information. Below is a list of known technologies used today. We refer to "known technologies" as there are technologies we have never heard of, such as those leaked by Snowden, for example.
IP address It can roughly reveal your location and ISP.
User Agent reveals information about the operating system and the web browser
Cookies They can be used for monitoring of users on all the domains they visit.
Geolocation - can locate your location.
JavaScript The specific Scripts μπορούν να αποκαλύψουν πάρα πολλά, από τη γλώσσα και το σύστημα που χρησιμοποιείτε, έως την ευκρίνεια της οθόνης σας, και πολλά άλλα.
HTML5 uses new options, such as Canvas Fingerprinting
Plugins Flash, Java, or Silverlight can search and store even more of your information. They can reveal your installed letterseries and other information about your system environment.
You can see what is revealed by your system when you sign in to web pages Panopticlick, Browser Fingerprinting and Browserleaks.
How to protect yourself
It is what we say "there is no cure" that is common to all. There are, however, guidelines and optimization practices that will limit your exposure to the Internet.
For your IP Μπορείτε να χρησιμοποιήσετε ένα web proxy, εικονικό ιδιωτικό δίκτυο ή ένα σύστημα όπως το Tor για να κρύψετε τη διεύθυνση σας.
For User Agent: the User Agent can be changed in the browser. Firefox users can use an add-on like this User Agent Switcher for example, and its users chrome This makes it a perfect choice for people with diabetes and for those who want to lose weight or follow a balanced diet. User-Agent Switcher for Chrome.
Cookies: It is highly recommended that you disable third party cookies in your browser. This means that only the site you connect to can give you "cookies" while the other sites will not be able to "load" their own tracking data. This gets rid of tracking cookies embedded in systems from ads or social media.
Geolocation Browsers are usually set to ask before enabling the feature. Unless the default setting has been changed.
JavaScript and HTML5 Εάν χρησιμοποιείτε NoScript ή κάποιο άλλο αναστολέα έχετε ήδη απενεργοποιήσει το JavaScript. Πολλές ιστοσελίδες λειτουργούν χωρίς το JavaScript, ενώ ορισμένες εμφανίζουν προβλήματα. Όμως μπορείτε να δημιουργήσετε μια λίστα επιτρεπόμενων αξιόπιστων ιστοσελίδων, και έτσι τα scipts θα μπορούν να λειτουργούν χωρίς να σας παρουσιάζουν προβλήματα στην εμφάνιση της by clicking heres. Of course you can disable JavaScript completely from your browser. Some features of HTML5 such as Canvas, can be disabled on some browsers either directly or by using add-ons.
Plugins Make sure your plugins do not automatically open or disable them permanently so they can not be used on web pages unless you allow it first.
Is something missing? You can add it to the comments.
