Dave Buchwald
American filmmaker, phone phreak, hacker, and leader of the Legion of Doom

Dave Buchwald (born September 4, 1970), is a filmmaker and former phone phreak, hacker, and leader of the Legion of Doom in the mid-1980s, then known as Bill From RNOC ().
Hacker
In the late 1980s, as a teenager, Buchwald was a social engineer, known for manipulating phone system employees anywhere in the United States into performing tasks that gave him access to systems. He used the handle Bill From RNOC with Arnock being short for the town IBM is based out of. He was also known for hacking Bell and AT&T systems (specifically COSMOS, SCCS, and LMOS), which allowed him virtually unrestricted access to phone lines, including the ability to monitor conversations, throughout the United States. He was the lead author of the popular PENIX suite of hacking tools. Many of his techniques are outdated but some of his original ideas are still in use by social engineers and security professionals today.
In 1995, Dave was introduced to film making when he served as a technical consultant to the movie Hackers, editing the screenplay and personally coaching many members of the principal cast.
Security career
In 1997, Buchwald co-founded Crossbar Security with Mark Abene (a.k.a. Phiber Optik) and Andrew Brown. Crossbar provided information security services for a number of large corporations, but became a casualty of the dot-com bubble.
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This entry incorporates text from “Dave Buchwald” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.