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.
Below is a sample of the emails you can expect to receive when signed up to Dubai South.
Hi Andrew Gonzalez,
Thank you for your interest in Dubai South.
You can now look forward to receiving regular updates with the latest news, on-ground developments and exciting events all happening right here at Dubai South.
Please Activate your account.
The Team at Dubai South.