What does "data sanitization" mean? Is it secure deletion or something?

Yeah...possibly...probably...more or less...I think.

Well there it is: http://cmrr.ucsd.edu/people/Hughes/D...onTutorial.pdf
I would like to know for sure.

I remember reading an article online a while ago about some security software company had collected hard drives from scrapped computers, and found all sorts of personal and business information had been left on them. Some people are careless.

This is very common. I don't know why but it happens very often.

Well, maybe a process of life... everythg going to /dev/null

Why do some relate to people with "@" sign? Like "@John". I know YouTube started this trend but is it correct to "say something at John" instead of "say something to John"?

@Mr Alex (sorry )
I think the meaning is more like "this message/whatever is directed at John". It's just another bit of internet/texting shorthand we'll have to put up with.

Why fighting (and basicly all other) games say "You win" instead of "You won" when you actually already won?

Programmers are not known for the best English spelling and grammer.

I would disagree on this one. Real hackers are knows for very correct spelling.

R341 H4XX0rz sp311z 7hingz wr0ng.

Yeah, that's quite funny.
So noone knows why it's always "You win" when fight is already over?

Atleast it is not "UZ 1!!!" or something like that

Because the person saying "You win" is making the concession, and thereby "granting" the victory in the present. Thus present tense, not past tense. It is my concession that gives you the victory (granted, I was losing at the time I conceded, and your victory was inevitable, but I controlled when you won by making the concession.

Hence, if I am the other contestant, it is correct for me to say "You win." My present statement is the concession and conveys the victory. When you return to your corner (in the boxing ring), your second and your coach would say "You won," as the victory is by then a past event.

During a fight, "You win!" is equivalent to "I give up!" or, dialectical, "Uncle!" In a game, it's equivalent to "I resign!"

I.e, "You win" is a concession by a participant; "You won" is an observation by a non-participant. (And might be better phrased as "You have won.")