There are several commercial exploit kits available containing 0day vulnerabilities:
White Phosphorus Exploit Pack http://www.immunityinc.com/products-whitephosphorus.shtml
Agora Exploit Pack http://gleg.net/agora.shtml
VulnDisco Exploit Pack Professional http://www.intevydis.com/vulndisco.shtml
D2 Exploitation Pack http://www.immunityinc.com/products-dsquare.shtml
... plus many more
What are the techniques to defend against such kits short of purchasing each to learn what they contain?
Merged the following question with the one above:
What are techniques to defend against popular crimeware kits/packs?
For example, the crimeware packs described on http://mipistus.blogspot.com/:
- CrimePack Exploit Kit
- Eleonore Exploit Pack
- Phoenix Exploit Kit
- Black Hole Exploit Kit
- Siberia Exploit Kit
- JustExploit Exploit Pack
- YES Exploit Pack
... plus more
Another description of CrimePack by Brian Krebs.