An example system can comprise a memory to store machine readable instructions. The system can also comprise a processing unit to execute the machine readable instructions. The machine readable instructions can comprise a service layer to generate an office machine security policy for a heterogeneous fleet of office machines. The heterogeneous fleet of office machines can comprise two different office machines. The service layer can also generate a security configuration for each office machine of the office machine fleet. The security configuration for a given office machine of the heterogeneous fleet of office machines can comprise a security setting for the given office machine. The machine readable instructions can comprise can also comprise a device layer to translate the security configuration of the given office machine into security instructions that are executable by the given office machine.