Thanks for the response and I appreciated it.
Just wondering how those people involved able to know the list of possible username/s in that exchange since like I mentioned, Im just logging in using my PC at home.
My account there is somehow secure based on my own way of securing it and the only way to wreck my account there is the site itself will turned to a fraud.
you may want to contact c-cex
https://bitcointalk.org/index.php?action=profile;u=220467 or their ticket service or their topic
https://bitcointalk.org/index.php?topic=418700.0 and ask them.
but did you use your username on c-cex on other places like having the same username on c-cex and another exchange or forums?
So a hacker can spy on you from another part of the world to get your password and email without you being aware of what's happening?
the communication is over an encrypted https
"The connection to this site is encrypted and authenticated using a strong protocol (TLS 1.2), a strong key exchange (ECDHE_ECDSA), and a strong cipher (CHACHA20_POLY1305)."
so no it is not possible to "spy" and get that but hacking their database is another story.