has spammed target users with MFA prompts in the hope that the legitimate user will grant necessary approval.
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 spammed target users with MFA prompts in the hope that the legitimate user will grant necessary approval. ### Response: T1621.