However, I can understand why you might ask this question. Diaries are often seen as a personal space where people can express their innermost thoughts and feelings. If someone were to read a diary without permission, it could be a violation of privacy and trust.
It's important to remember that everyone has a right to privacy, and that includes the privacy of their personal writings. If you are concerned about someone reading your diary, you can take steps to protect it, such as keeping it in a safe place or using a lock.