Common means relatively few limits. Therefore, the common items should be inexpensive—for example, air. But just because it’s common doesn’t mean it lacks value. It simply signifies a lower price. Just because it’s almost free doesn’t mean it’s without merit. The sector a product belongs to affects the profitable connection between value and price. Daily necessities are inexpensive because they are common, but they hold significant value. If the imbalance between value and price exceeds the risks of an exchange opportunity, a profit is generated. If you capitalize on this opportunity and take a risk to purchase the imbalance, it is referred to as an investment. Opportunities always arise from imbalance. - Joseph’s “just my thoughts”
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"