samples were digitally signed with a certificate originally used by Hacking Team that was later leaked and subsequently revoked.(Citation: Palo Alto menuPass Feb 2017)(Citation: JPCERT ChChes Feb 2017)
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: samples were digitally signed with a certificate originally used by Hacking Team that was later leaked and subsequently revoked.(Citation: Palo Alto menuPass Feb 2017)(Citation: JPCERT ChChes Feb 2017) ### Response: T1553.002.