Cpp Coding Standards/SECURITY/UnsafeFunc

Don't use functions that are known to have security issues:

strcpy(), strcat(), gets(), sprintf(), and the scanf() family format string problems ([v][f]printf(), [v]snprintf(), and syslog())
race conditions (such as access(), chown(), chgrp(), chmod(), tmpfile(), tmpnam(), tempnam(), and mktemp()
potential shell metacharacter dangers (most of the exec() family, system(), popen())
poor random number acquisition, such as with random()
when using alloca, limit the amount of memory requested, as it is bound by the stack size.