Dr K (Dr. K / Dr. K.)

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  via
  The Complete Hacker's Handbook: Everything You Need to Know About Hacking in the Age of the Web
  by K. Dr
  Softcover, Andrews McMeel Pub, ISBN 1858684064 (1-85868-406-4)
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  The Hacker's Handbook 3.0
  by Dr. K
  Softcover, Carlton Books Ltd, ISBN 1847321100 (1-84732-110-0)
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  Hackers' Tales: Stories from the Electronic Front Line
  by Dr K
  Softcover, Carlton Books, Limited, ISBN 1844428095 (1-84442-809-5)