[AM2.5: 14] Build and maintain a top N possible attacks list.
The SSG helps the organization understand attack basics by maintaining a living list of attacks most important to the firm and using it to drive change. This list combines input from multiple sources: observed attacks, hacker forums, industry trends, etc. The list does not need to be updated with great frequency, and the attacks can be sorted in a coarse fashion. For example, the SSG might brainstorm twice per year to create lists of attacks the organization should be prepared to counter “now,” “soon,” and “someday.” In some cases, attack model information is used in a list-based approach to architecture analysis, helping to focus the analysis as in the case of STRIDE. Don’t just build the list; use it.