quality:corruption
Negligent tortious interference

The above situations are actionable only if someone with actual knowledge of, and intent to interfere with, an existing contract or expectancy between other parties, acts improperly with malicious intent and actually interferes with the contract/expectancy, causing economic harm. Historically, there has not been actionable cause if the interference was merely negligent. However, some United States jurisdictions recognize such claims, although many do not. A tort of negligent interference occurs when one party's negligence damages the contractual or business relationship between others, causing economic harm, such as by blocking a waterway or causing a blackout preventing the utility company from being able to uphold its existing contracts with consumers.