During the   gained initial network access to some victims via a trojanized update of SolarWinds Orion software.(Citation: SolarWinds Sunburst Sunspot Update January 2021)(Citation: FireEye SUNBURST Backdoor December 2020)(Citation: Cybersecurity Advisory SVR TTP May 2021)
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: During the   gained initial network access to some victims via a trojanized update of SolarWinds Orion software.(Citation: SolarWinds Sunburst Sunspot Update January 2021)(Citation: FireEye SUNBURST Backdoor December 2020)(Citation: Cybersecurity Advisory SVR TTP May 2021) ### Response: T1195.002.