The bulk of attacks from 1977 onwards were the responsibility of a second type of unit, the ASU.
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: The bulk of attacks from 1977 onwards were the responsibility of a second type of unit, the ASU. ### Response: .