The security of power plants becomes increasingly critical as different networks are connected and systems are integrated in a collaborative manufacturing environment. Security measures aim at protecting the availability, integrity and confidentiality of a computer system from being compromised through deliberate or accidental attacks. Similar to process and safety improvements, security improvement needs to be a continuous activity. Because of the wide variety of different elements that need to be addressed to improve system security, many companies struggle to define the best strategy to encounter these issues. A key element in defining the best strategy to approach system security is to define the areas in the system or organization that are vulnerable for cyber security breaches. ABB has developed a quick and pragmatic methodology to identify these hazardous areas, helping companies focus their cyber security strategy on the areas that need the most attention. ABB's Cyber Security Assessment is a standardized approach that gathers valuable information from different key players in the customers’ organization as well as critical computer configuration and settings. Based on this information, the resulting report provides detailed recommendations to reduce cyber security vulnerabilities while helping to develop a focused and sustainable security strategy for controlsystems. The scope of this paper is to describe a case where the above described methodology has been applied in a real power plant.
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