An attitude of defensive isolationism, often seen in groups or individuals that retreat into a fortified mindset.

सुरक्षा की मानसिकता

English Usage: The team developed a bunker mentality after facing repeated criticism from the media.

Hindi Usage: मीडिया की बार-बार की आलोचना के बाद टीम ने सुरक्षा की मानसिकता विकसित कर ली।