Thanks for the question.
It does imply that virtually anyone can be deceived. The question then becomes:
- "How do I avoid being deceived?"
I would say the best way to avoid deception is to stay in the state of grace, know the truths of the faith, and pray frequently. These are trying times and we can't afford to be lazy. We must live our Catholic faith to the fullest, and for extra help, entrust yourself to the Blessed Mother. Mary is in a particular Battle with Satan right now so be clear about choosing her side.
The Rosary is the weapon, and she is a good mother who looks out for her children.
Lastly, don't fear, but trust. Trust in our Lord, and the aides He has sent us. You'll be safe.