In plain language, negligent security focuses on whether the owner, landlord, or business responsible for the property took reasonable steps to protect people who were expected to be there. The key phrase is reasonable. The law does not require a property to be protected from every possible danger, or to be guarded like a high-security facility. Instead, it looks at whether the defendant’s security measures matched what was foreseeable—based on the property’s layout, the surrounding environment, the type of activity that occurred there, and whether similar problems had happened before.
In New Hampshire, negligent security cases often arise in settings where people share common access points and where security failures can be more likely to cause harm. That can include apartment buildings with shared entrances, retail centers with after-hours access, motels and hotels with inconsistent door procedures, and workplaces where employees or customers may be targeted. Even when the attacker is unknown, the claim can still focus on whether the property’s security was inadequate for the risks the defendant knew or should have known.


