This site did not show evidence of storing passwords in plaintext.
This site does allow secured connections (https)
This site did show a clear way to unsubscribe from their emails
This site does verify your email address.
Membership Emails
Below is a sample of the emails you can expect to receive when signed up to The Black Vault.
To complete the activation of your account, go to the following link: https://www.theblackvault.com/community/activate/MXtKGPA33vP8PTvCmVqT7PR70u529ZyP/