We enable organisations to consider security as part of their system and services lifecycle development process. Using analysis and modelling frameworks and techniques, based on state-of-the art research, we support elicitation, analysis and modelling of security requirements from the early stages of a system/service development process.  In doing so, we understand that security is not just a technical challenge but a challenge that incorporates organisational, human and technical perspectives and therefore our solutions consider those. We make use of state-of-the-art modelling and architectural languages, to model potential security controls that fulfil the identified requirements, and propose architectural solutions that satisfy those requirements.