has used DNS tunneling for C2.(Citation: Talos Cobalt Group July 2018)(Citation: PTSecurity Cobalt Dec 2016)
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: has used DNS tunneling for C2.(Citation: Talos Cobalt Group July 2018)(Citation: PTSecurity Cobalt Dec 2016) ### Response: T1071.004.