Dennis Terry

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Dennis Terry
Born Dennis Dan Teresi
(1954-08-14) August 14, 1954 (age 63)
Occupation Disc jockey

Dennis Dan "Denny" Teresi (born August 14, 1954), now known as Dennis Terry, is an American radio disc jockey and former phone phreak most famous for being the person who introduced John Draper to the field of phreaking. Both Draper and Teresi were operating pirate radio stations in the San Jose, California area.[1][better source needed] Their initial contact came when Teresi responded by telephone to one of Draper's pirate broadcasts.[2]

In the documentary The Secret History of Hacking, Teresi is identified as an expert in social engineering.[3] Teresi's mastery of the phone company's jargon allowed him to speak with phone company employees and trick them into revealing more information.

Teresi, who is blind,[4] has hosted an oldies radio show on KSJS since 1976 under the name "Dennis Terry",[5] and for several years he also operated an oldies record store in San Jose.[6]


  1. ^ "KTAO Roster". Retrieved 2017-07-22. 
  2. ^ "My First Visit". The Real Captain Crunch. Archived from the original on 2012-10-14. 
  3. ^ Secret History of Hacking (2001), retrieved 2017-07-22 
  4. ^ "On this day in 1978." The Spartan Daily, February 8, 2012, p. 6.
  5. ^ Kava, Brad (2006-12-01). "Why it sounds a lot like Christmas on the air earlier and earlier". East Bay Times. Retrieved 2017-07-22. 
  6. ^ Lapsley, Phil (2013-02-05). Exploding the Phone: The Untold Story of the Teenagers and Outlaws who Hacked Ma Bell. Grove/Atlantic, Inc. ISBN 9780802193759.