This study is aimed to discover the reasons for the employees to accept or not the Security Information Policies implemented in their organizations (SIPC), in México. FiveFactors are considered: Attitude (ATT); Self Efficacy (SEF); Information Perceptions (IFP); Rewards (REW) and Penalties (PNY) with 21 Variables as indicators. A questionnaire was designed and applied to 195 employees involved in the SME Software Sector in Guadalajara (SSG) México that conform the value chain, including: designers, manufacturers and suppliers; the confidence was measured with Cronbach’s Alpha (.87) and it was applied Structural Equations Modelling (SEM) to discover the 3 SIPC underlying variables in the mode The organizations must be aware about these results, because a great percentage of the attacks are originated from inside by an or few employees who consciously (or not) are not following the procedures and standards that the policies described.