bac tunvit cho hoi neu tao pass 17 ky tu abc123!@#....thi thang hacker neu do pass thi toi thieu phai mat bao nhieu thoi gian de do ra pass dang nay. su do pass se kho khan len theo cap do pass nhu the nao, gia su 17 ky tu nhung them 1 ki tu thi thoi gian do pass se chenh lech ra sao. bac giai...