Phreaking

Phreaking is a slang term coined to describe the activity of a culture of people who study, experiment with, or explore telecommunication systems, such as equipment and systems connected to public telephone networks. The term phreak is a sensational spelling of the word freak with the ph- from phone, and may also refer to the use of various audio frequencies to manipulate a phone system. Phreak, phreaker, or phone phreak are names used for and by individuals who participate in phreaking.

American computer programmer and former phone phreak

Algerian hacker

Wardialing (or war dialing) is a technique to automatically scan a list of telephone numbers, usually dialing every number in a local area code to search for modems, computers, bulletin board systems (computer servers) and fax machines. Hackers use the resulting lists for various purposes: hobbyists for exploration, and crackers—malicious hackers who specialize in breaching computer security—for guessing user accounts (by capturing voicemail greetings), or locating modems that might provide an entry-point into computer or other electronic systems. It may also be used by security personnel, for

American security expert and entrepreneur

form of eavesdropping using sideband electromagnetic emissions

Joybubbles ( – ), born Josef Carl Engressia Jr. in Richmond, Virginia, was an early phone phreak. Born blind, he became interested in telephones at age four. He had absolute pitch, and was able to whistle 2600 hertz — an operator tone also used by blue box phreaking devices — into a telephone. Joybubbles said that he had an IQ of "172 or something". Joybubbles died at his Minneapolis home on . According to his death certificate, he died of natural causes with congestive heart failure as a contributing condition.

book by Bruce Sterling

malicious and white hacking