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

When I play this card, does its <On Play> effect force me to trash cards from my security stack until there are 3 cards left?
No, this card’s <On Play> effect allows you to trash any number of cards, from zero cards, up to however many cards you need to trash for you to have 3 cards left in your security stack.
Ruled Mar 28, 2024
How does this card’s <On Play> effect work if I have 3 or fewer cards in my security stack?
You can’t trash any security cards, so the effect does nothing.
Ruled Mar 28, 2024
I have 5 cards in my security stack. Can I use this card’s <On Play> effect to only trash 1 security card and gain 1 memory?
Yes, you can.
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.