....Shouldn't we add some sort of protection like sending a verification link to our emails then when we check them we can change our passwords ?
EDIT : Also how much characters do you advice me to use so I will be safe
An optional verification link to our emails then when we check them we can change our passwords would be a great idea, but I don't know if the currently used forum software has that capability.
I would advise you to use as many characters as possible in your password, and make certain your password is truly random and composed of special characters, upper and lower case letters, and digits. You can use 100 character passwords for this forum.