This whole site uses the Secure Sockets Layer (SSL) security protocol. This means that all data such as Usernames, Passwords, and Credit/Debit Card details are encrypted.
I will not pass on any of your data to other organisations, other than the two payment gateways that I use: Paypal, and Stripe. They need your name and email address in order to process your payments and send you a receipt.
For Credit Cards, you need to enter your email address and your credit/debit card number and 3 digit CVC number, and sometimes the date of expiry. My site doesn’t retain this data; rather it is kept on servers of the payment gateway used, either PayPal or Stripe.
For PayPal, you are taken to their website for the payment, so my system doesn’t see any card information.
In both cases your information is transmitted under the SSL protocol.
You pick your own Username, which is non-changeable. You pick your own Password (I’m not allowed access to existing passwords) and I recommend that you change it at least once a year. For your Username, you can use your Username, or you can use your Email address that you registered with. Obviously, you also need your Password. If your login details are correct, you gain access to the site. If you forget any of these pieces of information, choose HELP>AFTER REGISTRATION for various hints and tips.
I use WordFence, a security system specifically designed for WordPress sites. This checks constantly for suspicious activity such as Password hacks, changing core files, and other such rogue behaviours. When any are discovered the IP addresses of those responsible are blocked.