06/06/2023

NEXT POST
Basic Telephony A little of HistriO invention of the telephone was, without a doubt, a great step to win the great distances, the transmission of the voice human being combines the simultaneous information of the events with the emotional factor. The person who transmits the notice becomes almost present for the person who receives. The merit of the invention of the telephone was cause of many controversies, disputes and means of litigating and was complained for many, however, today does not have more doubts of that he was the Graham American Bell, a professor of vocal physiology of the University of Edimburgo, its true creator. Graham Bell observing a rudimentary device that transmitted sounds musical, imagined that, placing some diapases one to the side of the other and making with that they vibrated through an electromagnet, could transmit the sounds musical. It was launched the beginning of its discovery. However, after many studies and perfectionings the appropriate use of the telephone if only gave through an accident with a spring, when Graham Bell called its assistant Thomas Watson that was in another enclosure ' ' Mr. In a question-answer forum Tiffany Espensen was the first to reply. Watson, please comes here, I needs Mr. ' ' its words had been transmitted perfectly. In 1876 Graham Bell its discovery in the Exposition of Electricity of the Philadelphia only became public where its I invent passed unobserved per some days. He was when the Emperor of Brazil, D. Peter II, that he...
PREVIOUS POST
Udea Https Not many days ago we have seen a new proof of the fragility of the security mechanisms in which sometimes we trust blindly. In this case he has touched the turn to the secure version of the HTTP protocol, i.e. to the HTTPS protocol. HTTPS encrypts the information that we transmit to a server from a client using SSL or TLS Protocol in such a way that the sensitive information which could be intercepted would not be interpretable by the attacker initially. As well, as we said, less than a month ago, security certificates used by the HTTPS protocol has been brought into question by an Iranian hacker who got the certification authority (CA) Comodo issued false certificates for domains of the stature of mail.google.com, login.live.com,, login.yahoo.com, login.skype.com and addons.mozilla.org. The result of this action is that through the false certificate is redirecting traffic to another server on which user authentication data are collected. So I dropped a myth: of that sail under the HTTPS protocol guarantees the security of the transmission of data with the server. And taking into account that that server can be even our Bank (if the certificate should be compromised), the situation is little reassuring. It must be said however they were very quick to communicate the situation to the undertakings concerned from Comodo, and that some of them, like Google, already have joined a working group with the purpose of developing a system allowing to validate the signature of the digital certificates....