英语听力精选进阶版 16356（在线收听）

03 Sept 14: Ethical Hacking

Wed, 3 Sep 14

On today's podcast we go to an Ethical Hacking conference, where programmers learn hackers' dark arts in order to protect their own companies; and we speak to Dr William Wright of Wrightbus, winner of NISP's 2014 Innovation Founder award.