- "extract (a modulating signal) from its carrier."

Demodulate is a technical show exploring hacking & phreaking in the 1980s-1990s. By interviewing people involved in the hacking & phreaking scene during this period, we will attempt to understand techically how their attacks worked along with the motivations behind them.

Episode 2: "The Wardialer" - Popular in the 1980s and 1990s, "wardialing" was a popular method hackers used to find computer system to attack. Prior to the movie "WarGames", it was known as "demon dialing". Whatever you called it, there was much more to "wardialing" than just dialing a bunch of telephone phone numbers. There was a complete methodology hackers used to avoid punishment from 'Ma Bell' (The phone company) and law enforcement. There was also more to wardialing than just looking for modem carriers. Wardialing was used to identify PBX (Private Branch eXchanges), telco "test" equipment, unprotected voice mail systems, fax machines, HVAC/temperature control systems, elevators, radio towers and much. By the early 2000's, the art of wardialing was almost dead. Then hackers started to use VoIP (Voice over IP) to take wardialing in a completely new direction. In this episode of Demodulate, we discuss the old and the new school of wardialing.

For more information, etc see the Episode 2 page.

Download "demodulate-2.mp3" (Episode 1)

Reddit discussion about "The Wardialer"


Episode 1: "The x.25 hacker" - Invented in the 1970s and popular in the 1980s, x.25 networks allowed some of the first computer systems to be globally connected. At the time, x.25 networks were used by ATM machines, aviation companies, e-mail systems, environmental control systems, news outlets, chemical companies, banking and financial computers and much more. Globally connectivity and a wide range of targets attracted hackers from around the world. In this episode, we will be exploring and talking with x.25 hackers to learn how x.25 networks functioned and how x.25 hackers exploited them.

For more information, full interview recordings, etc see the Episode 1 page.

Download "demodulate-1.mp3" (Episode 1)

Reddit discussion about the "x25 hacker"


Telephreak.org production | Twitter: @dabeave666 | e-mail: dabeave@gmail.com