The definition of ‘virtual’ in the dictionary refers to a presumed existence or subject that is treated as if it does not exist in reality. However, in contemporary usage, ‘virtual’ describes something that cannot be physically sensed by human beings. For instance, ‘virtual currency’ exists in the form of bits, as it cannot be perceived sensibly. Just because you can’t feel it doesn’t mean it doesn’t exist. In fact, human senses cannot detect the smallest unit of atoms that compose all things, yet that does not negate their existence. If something that does not exist but can exist as a hypothesis is called ‘virtual,’ then it exists in reality as a concept as soon as it is assumed! When something is hypothesized, the entity that is assumed originally did not exist, and the subject who made the assumption had not existed from the beginning, thus proving its existence by expressing the will of that assumption. Therefore, distinguishing between virtual and real holds no ontological signifi...
For the security of the Internet service, we have been asked by the Internet service companies to set the password combined by more than 8 or 10 "uppercase letter+lowercase letter+number+special character". But it was obviously of no use. This security guideline was recommended by Bill Burr who worked at NIST in the USA, he suggested this way in his report. Furthermore, the user was required to change the initial password set regularly. Despite this measure, the best way of security to protect users' accounts was the notification of the alarm for attempted hacking when the hacker tried. We have only tried to change the keys despite the simple method meanwhile. Today, the world has begun to comprehend that the security problem is not encryption or confidentiality, but simply cyber-dominion control and communication. - Joseph's "just my thoughts"