<prompt> Translate the following text to EnglishMashirika kadhaa mara kwa mara yalitumia mfumo na udhibiti wa ufikiaji wa mtandao kwa kuruhusu watu waliotajwa kujaribu kuvunja mifumo yao kwa kutumia mbinu za hivi karibuni za kuvinjari.  <response>: Several organizations periodically tested system and network access controls by allowing designated individuals to try to break into their systems using the latest hacking techniques. 