has gained access through VPNs including with compromised accounts and stolen VPN certificates.(Citation: NCC Group APT15 Alive and Strong)
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 gained access through VPNs including with compromised accounts and stolen VPN certificates.(Citation: NCC Group APT15 Alive and Strong) ### Response: T1133.