Thank you JustSid and Quadraxas!
Very informative and valuable!
I used my day to do some research on adaptive hash functions respectively bcrypt.
I was really afraid of implementing it, because i look so complicated.
But fortunately bcrypt is already implemented in PHP 5.5!
So i had no problems using it.
Tomorrow iŽll do some research on secure server connection.
IŽll ask here again if i donŽt understand something.
Thank you very much again!