Jay Fenlason's Hack is the name given in this article to the original Hack as written by Jay Fenlason and friends, and to two other versions of Hack of different lineage than Andries Brouwer's Hack. The exact content of the original Hack is little known. Development began shortly after the 1982 USENIX conference in Boston, MA where the Michael Toy and Ken Arnold (the authors of the then closed-source Rogue) spoke. The only publication of the original Hack was on the 1983 or 1984 USENIX software distribution tape. Three derivatives are known to exist: