That can be part of it, but in Scripture it shows up more often around false teaching than possession or oppression. Paul calls it “discerning of spirits” in 1 Corinthians 12:10, and it’s the Spirit-given ability to tell whether something comes from God, human nature, or something darker. Think of the Bereans in Acts 17 testing what Paul said against Scripture, or 1 John 4 telling us to test the spirits because many false prophets are out there. Someone with this gift will notice a sermon or book sounds good but is subtly off, sometimes long before anyone else catches it.
If you have it, other believers usually confirm it over time.
People with this gift can drift into being critical of everything, and without love and humility it turns into plain suspicion with a spiritual label slapped on it.