소 잃고 외양간 고친다
so ilko oeyanggan gochinda · Fixing the barn after losing the cow.
Taking precautions only after the damage is done.
When to useWhen a fix arrives too late to matter.
Think ofLocking the stable door after the horse has bolted.
Examples
해킹당하고 나서 비밀번호를 바꾸다니, 소 잃고 외양간 고치는 격이네.
Changing the password after the hack — fixing the barn after the cow's gone.