Until now, cyber security VENDORS made products by buying the algorithm that they did not intrinsically understand, then the most malicious hacker attacks were bought on the dark web and anyone could do them. Now many are getting excited about using block-chain technology. It was enough to have a good Programmer in the team and voila, the game was done. But above all, technology made by others was used, such as for crypto-coins. Announcements that changed the world, words of democracy and anarchic sense when now to be a bitcoin mnator you need millions of dollars, Block-chain technologies with computers worth a total of $ 300 million have been brought to America from China, as cited in a recent article that we report. Being a miner costs money, not only for the exorbitant energy consumption, but with the necessary hardware. Countries that saw the role of tax havens diminish are trying to throw themselves into the recognition of crypto currencies, a gold mine that is transportable compared to physical gold. With very high costs but it is transportable. Other countries accept the transactions. At this point, the block-chain engine is liked to solve other problems, from airline tickets to digital identity. It is a complex technology but, as we explain in other articles, easy to use. Therefore, faced with the scent of great earnings, various commentators rush into lavish praise, without understanding that, at least in the discourse of crypto-coins, we are moving towards a theoretically democratic world but in which the man in the street can only be encouraged to invest the his money hoping to earn effortlessly, and then risk losing everything in the Ponzi effect predicted by many. There are call centers that contact and make a sweetened explanation of the advantages of this investment. However, the so-called block-chain democracy is a democracy for a few rich people, the pivot of the economy of democratic nations is being dismantled by removing the necessary to maintain the welfare state and the organization of the state itself. I remember that at the time of the Soviet Union there was the habit of keeping money under the mattress, taking it away from taxation and the state. Then the banknotes were periodically changed, the way that the citizen had to show them to change them for new ones, otherwise they became waste paper. In the articles that I have reported on the press-review page there are critical articles and enthusiastic articles about this new technology. 47% of corporate chief financial officers will evaluate the adoption of cryptocurrencies as an "asset" of the business, as mentioned in an article we reported. According to two surveys carried out by Gartner in September 2021, at this stage the interest of CFOs remains uncertain, with about a quarter of respondents expecting their personal involvement to be limited and only a few expect to take on the full guidance of digital currency initiatives, demonstrating a distrust due to the lack of technological knowledge of the phenomenon, in fact Gartner highlights a certain confusion and the overlapping of terms such as cryptocurrencies and the blockchain. I hope that these notes and this press review will help the C.F.O. to better understand the problem, in fact I put the articles in tabular form, some in English, others in Italian, so that the reader can make an easy checklist of what he has read. Of course, the baby should not be thrown away with the bath water, for this reason I invite those who can decide to distinguish the good from the bad and realize that there may be alternatives, hitherto unknown, such as our Real Digital Currency.