To prove a negligent security claim, you must prove: *The property owner owed you a duty of care, *This duty of care was breached, *The breach caused you to suffer injury, *You suffered actual damages. Perhaps the hardest element to prove is that the breach in duty of care resulted in your injuries, particularly in negligent security claims involving third-party crime. To build your case, a Florida negligent security lawyer may use photos of the property that demonstrate security issues, a police report and results of an investigation, history of crime in the area, prior negligent security claims against the owner, and more.