Posecai v. Wal-Mart Stores, Inc., 99-1222 (La.11/30/99), 752 So.2d 762, 766-68, held that while Louisiana business owners generally have no duty to protect others from the criminal acts of third persons, they do have a duty to implement reasonable measures to protect their patrons from criminal acts when those acts are foreseeable. Determining when a crime is foreseeable is a critical inquiry in the duty equation. This inquiry is answered employing a balancing test. The foreseeability of the crime risk on the defendant’s property and the gravity of the risk determine the existence and the extent of the defendant’s duty. The greater the foreseeability and gravity of the harm, the greater the duty of care that will be imposed on the business. A very high degree of foreseeability is required to give rise to a duty to post security guards, but a lower degree of foreseeability may support a duty to implement lesser security measures such as using surveillance cameras, installing improved lighting or fencing, or trimming shrubbery. The plaintiff has the burden of establishing the duty the defendant owed under the circumstances. The foreseeability and gravity of the harm are to be determined by the facts and circumstances of the case. The most important factor to be considered is the existence, frequency and similarity of prior incidents of crime on the premises, but the location, nature and condition of the property should also be taken into account. It is highly unlikely that a crime risk will be sufficiently foreseeable for the imposition of a duty to provide security guards if there have not been previous instances of crime on the business’ premises.