The Hillson’s model served as a reference for the development of other maturity models proposed by different
authors. One of these models, based on the Hillson’s model, is that proposed by the International Council on
Systems Engineering INCOSE (2002), which proposes the Risk Management Maturity Model, RMMM. The
modification shown by this model is basically the extension of the initial definitions of the four maturity levels
proposed by Hillson. This model manages to define elements of risk management within each of the attributes to
evaluate, as well as their characteristics according to each of the four maturity levels proposed. Some adaptations
have been proposed also by Heijden (2006) and Wolbers (2009) in an attempt to complement some weaknesses of
the RMMM. These models have been applied in practice and comparisons carried out between applications and
environments.