Is it okay of an employer who never hired you to forward your contact to someone else?

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There are some firms where you need to sign a confidentiality closure and not speak a word of the firm but some firms or schools or institutions can forward your contact, without even asking you is that okay with you and no, they didn't hire you before or replied to your job application. So, they are doing all this without your permission in the first place. How would you feel? Is that right of them? And yes, the person who confessed how they got your contact were on the opposite side where you live so, some strange behaviour overall, isn't it?