How should i find up to date information on and/or software for named;
Your distro's site, mailinglist, update mechanism or the authors site. Note some people prefer and promote Dan Bernsteins' software over ISC's BIND.
security problems in computer systems;
The
LQ FAQ: Security references, sites and mailinglists. Check out Linuxsecurity, Securityfocus, SANS, CERT, etc etc.
the standard Unix mail transport software.
What Rose_bud4201 said.