In Portugal, 300 thousand people have already registered. In the 120 countries where it is present, there are more than four million participants. Miguel Pupo Correia says it is not possible to "guarantee that they will not be attacked and that the information will not be stolen". "The more users they have, the more appealing the information will be," giving the example that it is "more appealing to steal information from half the world's population than five thousand people."

(The image used in this article is owned by Gonçalo Costa Martins - Antena 1)