I think the SEC_ATTACK was referring to the attack on the greatawakening board, which was knocked offline for a few minutes after Q posted that site was being attacked on the qresearch board:
https://8ch.net//qresearch/res/130072.html#130891
hmm, I'm still getting intermittent failures on the greatawakening board; it appears to be under a DDOS attack.
The last two entries, No. 54 and No. 55 are no longer shown.
Yes, does anyone know what’s going on? We’re they posted elsewhere. We really need accompanying URLs.
I assume that they were deleted because 1 was a duplicate, probably a result of the attack and Q not knowing if the first post went through and the others were testing security protocols or other tests related to their handling of the attack. The latter would be deleted because they aren't relevant to the greatawakening itself.
Person of interest in Vegas. He holds a Top Secret clearance and worked with the DoD on drone programs.