Leader: In the book ‘Extreme Ownership: How U.S. Navy SEALs Lead and Win,’ written by Jocko Willink, there is a training story where seven Navy SEAL trainees form a team and carry a rubber boat weighing over 100 kg on their heads. Usually, one team would finish first and another last, but the team members stayed the same, and only the leaders were swapped. As a result, the team that finished last moved to first place, and the team that was first became second. What changed was that only the leaders were replaced; the rest of the team remained the same. It’s important to note that, although a leader’s ability greatly influences success, the key point is that the team that was initially first was moved to second place, not last, even though the leader from the last team took over the first team. This is because, under the previous leader, team members developed a winning habit, which persisted even when the leader changed. The most crucial element in an organization is the leader itself....
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"