For  at least one identified persona was used to register for a free account for a control server. 
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: For  at least one identified persona was used to register for a free account for a control server.  ### Response: T1583.004.