That would depend on your own moral and ethical grounds. Personally i would say no.
Michelle was eavesdropping on Bob and Richard's conversation.
immoral, unethical
I was eavesdropping on my sister's conversation.
An unethical act is an action that is considering unethical or immoral by the general public or a court.eg. Kicking a puppy in the face.
unethical is more an immoral issue than an illegal issue
A person who listens to the conversation of others without their knowledge is often referred to as a "eavesdropper." This behavior is typically considered intrusive and unethical, as it violates the privacy of the individuals involved in the conversation. Eavesdropping can occur in various settings, whether in public spaces or through electronic means, and can lead to misunderstandings or breaches of trust.
I eaves droped your mom last night. (: Thats what she said xD
Unethical competition is trying to beat the competition by using immoral means. An example is employing slave labor in order to cut production costs.
"Mud Slinging."
Wrongful, wicked, evil, imperfect, morally wrong, etc.
Behavior in childhood can sometimes be indicative of radical or sociopathic behavior in adulthood, and these behavior patterns often result in unethical or immoral acts. This kind of behavioral prediction is not foolproof, and people can often resist such behavioral patterns.
mud-slinging