Sean Murphy is a cartoonist, artist based in Los Angeles, California. His comic book work includes the miniseries Batman/Scarecrow: Year One with writer Bruce Jones for DC Comics and the graphic novel Off Road for Oni Press. Upcoming projects include the four issue miniseries Outer Orbit at Dark Horse Comics, two issues of Teen Titans for DC Comics and a creator-owned project called Kael which takes place in Ireland during the early 80s at the height of IRA terrorism.

Sean Murphy is a cryptographer, currently a professor at Royal Holloway, University of London. He worked on the NESSIE and ECRYPT projects. His notable research includes the cryptanalysis of FEAL and the Advanced Encryption Standard, and the use of stochastic and statistical techniques in cryptology.