the most vulnerable or insecure part of a system
システムの中で最も脆弱または不安定な部分 (shisutemu no naka de mottomo zeijaku mata wa fuantei na bubun)
"Humans are often the weak link in cybersecurity."
"人間はしばしばサイバーセキュリティの弱い部分です。" (ningen wa shibashiba saibasekyuriti no yowai bubun desu)
an unplanned or spontaneous decision or action
to go from being poor to becoming rich and successful
to wait to get exactly what you want
to treat someone the same bad way they treated others
to admit that you have done something wrong
to be honest and reveal all the facts in a discussion