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

After checking the top security card using this card's effect, if that card cannot be added to my hand, what happens to that card?
It's placed at the top of the security stack, face down.
Ruled Mar 28, 2024
If I check my top security card using this card's effect and add it to my hand, do I have to reveal it to my opponent?
No, you don't.
Ruled Mar 28, 2024
When I have 0 cards left in my security stack, can I still <Draw 1> as a result of this card's effect?
No, you can only <Draw 1> if you add a security card to your hand.
Ruled Mar 28, 2024
When I have 0 cards left in my deck, can I still look at one of my security cards and add it to my hand?
Yes, the latter half of the effect, "Look at the top card of your security stack. You may add that card to your hand to trigger..." can still be activated even if you have 0 cards in your deck and <Draw 1> cannot be activated.
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.