No Details are ever public with anyone and are safely encrypted from our servers.
For Vendors: The only details we share is your email address in case you decide to communicate directly with their customers. Obviously, the email is shared only to the client you decide to communicate with via our email system as they will receive an email directly from you.
For Buyers: In case you buy something physical, the vendor will receive your shipping details to handle shipping. The will also receive your email address in case they decided to message you for any issues about your purchase.