Security and domain specific regulations are critical for any organization. Unfortunately, achieving these prerequisites in a socio-technical environment is a difficult task. For example, let us consider the aspect of computer security:~neither software developers nor regulatory authorities are security experts. Therefore, it is important that security experts' knowledge is captured and made available to software developers. Security patterns are a suitable prescription to capture experts' solutions to commonly recurring security problems. In this paper, we present the application of a general framework, based on security patterns, used to develop secure applications. It covers the entire process of solution development:~defining organizational security requirements using Secure Tropos, formalizing the pattern using SI*, implementing the pattern, integrating it into the final application, and monitoring the runtime. All these phases are discussed and illustrated with an eBusiness case study: the loan origination process.