Abstract: The present disclosure generally relates to techniques for defending against row hammer attacks. Some aspects of the present disclosure include systems and techniques for defending against row hammer attacks using dynamic assignment of guard rows. One example computing device for memory protection generally includes at least one memory and one or more processors coupled to the at least one memory and configured to: receive a first memory assignment for a service; determine, in response to receiving the first memory assignment, that the service is associated with a type of data; assign guard rows adjacent to a memory subset to protect the memory subset based on the determination; and dedicate at least a portion of the memory subset for storage of data for the service.