to close the stable door after the horse has bolted
to close the stable door after the horse has bolted
01
後の祭り, 手遅れ
to try to prevent something bad from happening after it has already happened
idiom
old use
例
After the company's sensitive information was leaked, they installed new security measures, but it was like closing the stable door after the horse had bolted.
盗難後にカメラを設置しても後の祭りだった。



























