If it is an egg whose eggshell has broken and it is not sealed and put in the refrigerator, it is not recommended to eat it again.
If you want to keep boiled eggs overnight, you must cook them thoroughly. If it's a delicious egg, you can't eat it after a night.
Generally, it is best to boil eggs for 8- 10 minutes. If there is not enough time, there may be bacteria. After a long time, the taste will get worse.