>>2540520 (lb)
Not Q, just someone who cracked the trip. I'm assuming all of Q's security is on his devices (hence the SEC_TESTs). Q never had to worry about the trip code because that would not stop Q from posting, hacking his device would. If Q's tripcode was routinely bested he'd simply employ a stronger security measure so the Black Hats simply didn't bother.
They're clever though and they thought, "hey it's trivial for Q team to fix this but what if we use it to sow doubt and discord?"
"I need an elegant letter aligning myself with patriots but ultimately condemning Q because of muh tripcode."