Previously, there were two headers to achieve this same effect: LC_THREAD and LC_UNIXTHREAD  (Citation: Prolific OSX Malware History).
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: Previously, there were two headers to achieve this same effect: LC_THREAD and LC_UNIXTHREAD  (Citation: Prolific OSX Malware History). ### Response: T1149.