Buffer Overflow Intro. ©2002, Jedidiah R. Crandall, Susan L. Gerhart, Jan G. Hogle.  http://sfsecurity.pr.erau.edu
Alice goofed, a common mistake, and Patty knows how to take advantage.
Alice didn’t write the program so that it checked to make sure the last name was 10 characters
or less before the mailroom worker tried to store it.
Norman is simple-minded; he only does what he is explicitly told to do.