A 35-year-old gang-rape survivor in Uttar Pradesh has been attacked with acid for the fourth time in Lucknow last evening. She has been admitted to a hospital after the latest attack. Acid was thrown at the woman sometime between 8 pm and 9 pm yesterday when she stepped out of her hostel to fill water from a hand-pump in Lucknow's Aliganj area. The attack took place despite a round-the-clock police presence for her security and an armed guard inside the hostel.