Increasing complexity and continuous change of IT environments challenge organizations to gain transparency on their cyber security. The Cyber Security Maturity Assessment supports with a unique method to measure the maturity and effectiveness of cyber security measures and results are documented using the Cyber Security Maturity Cockpit. In addition it provides an overview of the cost-value ratio of identified measures based on ISO/IEC 27001. By creating transparency the Cyber Security Maturity Assessment enables decision-makers to take the right decisions for optimal use of human and monetary resources and to strengthen the cyber security resilience of the organization following a holistic approach. CSMA enables organizations to answer questions like:- What do we in relation to cyber security?- How good are we with what we are doing?- What does it cost?