<FONT face=Verdana>This paper proposes a method for the system dependability requirement elicitation based on experiential knowledge about how the software often causes issues to the environment.The basic idea of this approach is to capture deniability requirements by identifying the issues that the system may bring to the environment and determining the countermeasures to tackle them.To identify the potential issues and determine the countermeasures

we propose to utilize the accumulated knowledge about how the system fails and brings issues to the environment.By taking advantage of this kind of knowledge

the proposed approach can help the analysts to<FONT face=Verdana> find more dependability requirements for the software to be developed.