A method by one or more computing devices to detect anomalous accesses to a system. The method includes generating a technical maturity profile of a system user based on analyzing historical commands submitted by the system user to the system and determining whether an access by the system user to the system is anomalous based on determining technical maturity attributes of a command submitted by the system user to perform the access and comparing the technical maturity attributes of the command to the technical maturity profile of the system user.