wardialer - meaning and definition. What is wardialer
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What (who) is wardialer - definition

TECHNIQUE TO AUTOMATICALLY SCAN A LIST OF TELEPHONE NUMBERS
War dialling; Wardial; War dialer; Wardialer; Wardialling; War-dialer; War Dialers; War Dialling; War dial; War dialing

wardialer         
<security> Almost certainly a shortened version of "WarGames dialer", from the film WarGames. 1. carrier scanner 2. A program which attempts to break a password of known length by iterating thru all possible combinations of characters that could make up that password. This approach is not feasable for cracking most passwords these days. However, as late as the mid-1980s, some long-distance companies required only very short numeric access codes (e.g. five digits) to verify the identity of their customers. Wardialers were created which would, running unattended, call up long-distance providers' local connect numbers and iteratively try possible access codes. Codes which worked were logged for later illicit use. These wardialers had a high success rate because of the small range of possibilities to iterate through, e.g. 10000 for a five digit access code, compared to hundreds of trillions of combinations for an eight-character alphanumeric code. Long-distance providers soon required longer passwords and took advantage of technology for rapidly tracing the phone numbers that wardialers were being run from, such that running wardialers became pointless and dangerous. (1997-03-16)
Wardialing         
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.

Wikipedia

Wardialing

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 example, to detect unauthorized devices, such as modems or faxes, on a company's telephone network.