the most vulnerable part of a system or group
システムまたはグループの最も脆弱な部分 (shisutemu mata wa gurūpu no mottomo zeijakuna bubun)
"Human error is often the weakest link in cybersecurity."
"人的エラーはサイバーセキュリティにおける最も弱いリンクであることが多い。" (Jinteki erā wa saibāsekyuriti ni okeru mottomo yowai rinku de aru koto ga ōi)
to reserve something for a particular purpose
to express care or sympathy toward others
to feel relaxed and confident
to have important or ambitious goals for the future
to make something easier to understand or to tidy a place
the least reliable or secure part of a system or group