a cyberattack that occurs before a vulnerability is patched
脆弱性がパッチされる前に発生するサイバー攻撃 (sojaku-sei ga pacchi sareru mae ni hassei suru saibā kōgeki)
"Hackers launched a zero-day exploit targeting the system’s core files."
"ハッカーはシステムのコアファイルをターゲットにしたゼロデーエクスプロイトを開始しました。" (Hakkā wa shisutemu no koa fairu o tāgetto ni shita zero-day exploit o kaishi shimashita.)
in a difficult or tricky situation
a controversial or sensitive political issue
someone who acts independently and ignores rules
the less harmful of two bad options
to finish preparations or close something securely
to lead a team or project
