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Kristian Westerstrahle is a Senior Revenue Assurance & Fraud Specialist at Telia, where they focus on data analysis to enhance processes and controls. Previously, Kristian worked at Nokia as a Specialist in Information Security and later held various roles at Telia Company, including Security Specialist and Revenue Assurance & Fraud Specialist. They have extensive experience in security consulting, fraud management, and project work, having actively collaborated with authorities on criminal cases. Kristian's career began in customer service at Tampereen Särkänniemi Oy, showcasing their diverse professional journey across multiple companies.