Old Red Cracker (abbreviated +ORC) is an anonymous reverser. He was one of the pioneers of publishing cracking lessons on the Internet. While his identity is unknown,^[1] reverse engineer Fravia had email correspondence with him and spread his tutorials.^[2]

Old Red Cracker founded the so-called "High Cracking University" (+HCU), to conduct research into Reverse Code Engineering (RCE). The addition of the "+" sign in front of the nickname of a reverser signified membership in the +HCU. +HCU published a new reverse engineering problem annually.^[3]