PAIN = Privacy, Authentication, Integrity, and Non-repudiation
Theory: Every time Q is talking about bringing PAIN or Justice[PAIN] they are really speaking about information security. Protecting information by mitigating information risks/unauthorized access.
Q team has it all and [they] will not be able to deny it. (Non-Repudiation) The statement's authors cannot successfully dispute its authorship or the validity of the statements.
PAIN is coming.