A network system of pattern analysis includes a centralized AI-based pattern analysis engine and each computing device comprises a local AI-based pattern analysis engine. The pattern analysis engine(s) each analyze computing operations on a local machine basis or a on a network basis depending on where installed. The AI-based pattern analysis engines identify common activity patterns for each machine and exclude the common activity patterns from further analysis of the computing operations, leading to more efficient identification of activity patterns indicative of nefarious activity. Once detected, the AI-based pattern analysis engines trigger an incident response to counter the nefarious activities. The AI-based pattern analysis engines include AI models that are continually or periodically trained to update the baseline common activity patterns.