Explore the fundamentals of security data science in this 51-minute conference talk from BSidesLV 2019. Delve into essential topics such as background knowledge, metrics code, and the unique challenges posed by antiforensics and parsing in the security field. Learn how to apply Occam's Razor to simplify problem-solving, effectively manage experiments, and ensure that data and experiments support conclusions. Gain insights into the importance of telemetry and understand the concept of adversarial model decay in security contexts. This comprehensive presentation provides valuable guidance for professionals looking to strengthen their approach to security data science and improve their analytical processes.