Abstract: Computer protection is weak with the methods currently available and there are risks of malicious users getting access to computers, corrupting important data, including system data. We are proposing a method for improving access protection, more particularly, by using a slave device that will enable or disable protection for applications as required. The device supports one or more users, none or more user groups, none or one or more Application Security Environments for each user or user group and one or more states for each Application Security Environment. The state of the hardware is manually controlled by the users. Depending on the configuration, each hardware state corresponding to an Application Security Environment corresponds to a set of privileges the processes running in that Application Security Environment have while that Application Security Environment is in that state.