Lónkhē Adistakto

Q:I have exactly 3 security cards. Do I activate both this card's "1 of your opponent's Digimon gets -12000 DP" effect and "place 1 of your opponent's Digimon face down on top of their security stack" effect?

A:Yes, that's correct.

Q:My opponent checked my security when I had 4 security cards, and this card was flipped over. This card's [Security] effect activates, but is my security stack considered to have 3 cards?

A:Yes, it's considered to have 3 cards.Cards revealed by a security check are not considered part of your security stack.