3 official rulings from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Does this card's [At End of Opponent's Turn] effect mean that if I have no cards left in my security stack, at the end of my opponent's turn I lose the game?
No. The effect only trashes cards from your security stack and isn't the same as you taking an attack. If you have no cards left in your security stack at the end of your opponent's turn, you continue the game as normal.
Ruled Mar 28, 2024
Do the <Security> effects on cards trashed by this card's [At End of Opponent's Turn] effect activate?
No, they don't.
Ruled Mar 28, 2024
If I have multiple copies of this Digimon in my battle area, do I trash multiple security cards at the end of my opponent's turn?
Yes, you do.
Ruled Mar 28, 2024
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Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.