Tutamantic develops software that reduces security risks and weaknesses during the architectural and design stages. Security threats can be hard to discover during the architecting and design phase, and current manual threat modelling processes are not good enough. Many threat model frameworks fail due to lack of know-how, models that don't get updated when the design changes, complex modelling steps and poor taxonomies. The Tutamen Threat Model Automator provides an automated structured approach to this activity, with simple data entry using Microsoft Office formats. The resulting threat metadata is mapped directly to the underlying design and uses well-known threat libraries for sourcing the threats. Threat modelling becomes a cost-effective activity with a drop in manual error, while providing a number of detailed reports which can be used by different project areas (architecture, development, test, etc.)