can communicate over SMTP and POP3 for C2.(Citation: FireEye APT28)
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: can communicate over SMTP and POP3 for C2.(Citation: FireEye APT28) ### Response: T1071.003.