Jeff Moss (hacker) also works with Mr. Robot's technical consulting team. DEF CON was portrayed in "The X-Files" episode "Three of a Kind" featuring an appearance by The lone gunmen. DEF CON was portrayed as a United States government-sponsored convention instead of a civilian convention. Actor Will Smith visited DEF CON 21 to watch a talk by Apollo Robbins, the gentleman thief and to study the DEF CON culture for an upcoming movie role. Jeff Moss (hacker) Jeff Moss, also known as Dark Tangent, (born January 1, 1975) is an American hacker, computer and internet security expert who founded the Black Hat and
Prefix sum are calculated in the first pass on each processing unit; the prefix sum of these partial sums is then calculated and broadcast back to the processing units for a second pass using the now known prefix as the initial value. Asymptotically this method takes approximately two read operations and one write operation per item. When a data set may be updated dynamically, it may be stored in a Fenwick tree data structure. This structure allows both the lookup of any individual prefix sum value and the modification of any array value in logarithmic time per operation.. However, an earlier 1982