Fraud over Internet Protocol

What Does Fraud over Internet Protocol Mean?

Fraud over Internet Protocol (FoIP) is the criminal act of stealing network capacity while undermining Voice over Internet Protocol (VoIP) device vulnerabilities.


The term was coined in 2006 after two men were arrested for hacking an unprotected corporate IP network and the networks of several VoIP providers. The hackers then rerouted the organization's network traffic to VoIP providers, resulting in call terminations and hefty interconnect charges for providers.

Techopedia Explains Fraud over Internet Protocol

FoIP can be prevented by adhering to the following security practices:

  • Basic security measures, such as firewall port protection
  • During repairs or upgrades, technicians should not allow open ports to remain open for extended periods. Otherwise, a system becomes an easy FoIP target.

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Margaret Rouse

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.