Buffer Overflow Intro. ©2002, Jedidiah R. Crandall, Susan L. Gerhart, Jan G. Hogle.  http://sfsecurity.pr.erau.edu
Patty knows where Norman will store her name and that part of her name is a program
Patty the hacker gives Norman 11 pieces of paper, each with a number representing an ASCII character:
SOLZHENGRAD is stored as 83-79-76-90-72-69-78-71-82-65-68.

Norman starts at mailbox 68 and replaces whatever was there before with the new piece of paper.  83èmailbox #68, 79èmailbox #69, 76èmailbox #70, 90èmailbox #71, etc.