That's a very disturbing question. I'd be torn between two responses:

I honor the contractual agreement with the social media sites I use not to divulge those credentials, just as I will honor the contractual agreement we make should you hire me. I don't give you my login credentials to their site anymore than I give them my login credentials to your network.

and

Good question! No, in the interest of security, I never give my personal login credentials to anyone else, whether they're for a government account, a corporate account for this or any other company, or a personal account.