Abstract
Actor Relationship Matrix (ARM) is a descriptive method which is able to generate SD diagram, and increase understandability of the i*. As an extension of the ARM, we propose a security requirements analysis method based on the Actor Relationship Matrix(SARM). This method is also able to convert ARM into SD diagram of i* of Liu method for security, and has the following benefits: 1) Easy to create because of tabular form. 2) Easy to improve the integrity among related actors, by verifying the relationship in tabular form. 3) Easy to express logically by AND/OR relationship between tasks. We propose a practical use of SARM.