Exam CSSLP topic 1 question 4 discussion

Demon dialing can refer to both the technique of repeatedly dialing a number to gain access immediately after another user had hung up and the automated technique used to test every phone line in an exchange and locate modems attached to the network. In terms of cybersecurity, demon dialing is typically used as part of penetration testing to identify vulnerabilities in a system's security by discovering accessible modems or potentially exploitable telephone lines on a target network. "Demon dialing" was popularized by the movie WarGames, which demonstrates the hacking technique (the technique eventually evolves into a technique called phreaking). After giving the program an area code and 3 digit prefix, the program then serially dialed every phone number in that prefix in order, recording which phone numbers were answered by a computer modem. Soon after, most likely because it was popularized by the movie, serial dialing was outlawed. Hackers got around this by simply randomizing the order the program dialed all the numbers. Later the terms "demon dialing" and "war dialing" became synonymous.