1. not defended or shielded from harm, danger, or damage
2. not covered by insurance, legal safeguards, or security measures

Examples

• The hikers were unprotected from the sudden storm.
• Children should never be left unprotected near the pool.
• The computer files were unprotected and easily accessed by hackers.
• Workers in the factory wore helmets because the area was unprotected from falling debris.
• The investment was unprotected against market fluctuations.
• She felt unprotected walking alone at night.
• The ancient ruins stood unprotected from weathering and erosion.