Andy Gill
I am an old school hacker at heart, who's always been interested in taking things apart and sometimes even putting them together again(in-fact he spent a good 5 years in computer repair and data recovery). As my day job I work as a senior penetration tester but in my nights I can be found doing a multitude of activities, be it hunting bugs, training karate, driving round the Scottish countryside or just simply helping folks learn more.
I am a strong believer in passing knowledge on and supporting the infosec community, I do this by providing tutorials on my blog (https://blog.zsec.uk), running my local DEF CON Chapter meetup & have also published a book: Breaking into Information Security: Learning the Ropes 101.