I think "truesdq" wants to know
1) is possible to hack Wi_Fi password, if yes then at what point"

There are many hacking tools through which one can hack the WiFi password very easily.

2) is it possible to know any information send by a user on a WiFi network.

Well, I am not sure of this question, but what I think that YES, one can know the information send on air by a packet capturing software.
But I am not sure of this.

Experts, can you please answer the 2nd question.


Regards
Alok.

@next_virus i don't mean that one can't hacked the information traveling through air...
Very easily one can hack , so is the case for password ...
that is why WLAN unsecure...
MY Question was what i asked as capturing password where you can re-read