摘要：The open source security components available on the internet are analyzed. Post release quality is discussed for distributed open source applications. The optimization cost for distributed applications is defeined. Optimal replacement cost is discussed. The maintenance factors that affect open source Mozilla projects are presented. A set of 200 security defects obtained from the Mozilla project defect data base are subject to analisys. A cost measurement is defined for maintaining software products is presented.
关键词：cost; security; open source; post-release quality
