It is legacy. Use the ACCTP threat model instead.
This model is an example of domain-specific threat model. It depicts some common threats to cloud systems. The model is implemented as a OWL ontology.
Note: please use old version of the base model with this one.
There is also the similar model, implemented as a threat template in the XML format for the Microsoft Threat Modelling (TM) tool.
It can be used to prove different ideas (see below). Also if someone made a decision to create an opensource, ontology-driven alternative to Microsoft TM, the CCCTM ontology could be used to test the software means.
Note, that it does not have a countermeasure hierarchy.