Hidden Reality: Caution, Your Hand Gesture Inputs in the Immersive Virtual World are Visible to All! - Sindhu Reddy Kalathur Gopal; Diksha Shukla; James David Wheelock; Nitesh Saxena (32nd USENIX Security Symposium, USENIX Security 2023, Anaheim, CA, USA, August 9-11, 2023, 2023)