Intelligent surveillance systems aim to identify suspicious activity beyond the observation of people and environments, as computer networks and computer systems remain vulnerable to malicious actions. The intelligent surveillance framework (Arcabouço de Vigilância Inteligente - AVI) uses the cognitive construction of a user profile and the recognition of devices for electronic purchases, aiming to ensure the authenticity of transactions for computer systems in networked interconnected. The AVI assessment shows that it is effective with respect to user authenticity and that the smart surveillance model in purchasing operations matches the expectation of vulnerability reduction.