As telephone calling through the Internet, also known as Voice over Internet Protocol (VoIP), becomes more common, it has also drawn the attention of online attackers. Before you try VoIP, you should know the benefits and drawbacks, and how you can enhance its security.

Benefits of VoIP

VoIP service for consumers offers these features for both conventional telephone and cell phone customers:

Easy setup and use: In many areas, you don't even need a computer to get started; service is available through your telephone using a small adaptor. Major telephone, cable, and Internet providers also offer nationwide calling along with their other service packages.
Voice storage: You can access VoIP voice mail online, store your conversations on your computer, and replay them whenever you like.

Risks of VoIP

Theft: Attackers who can access a VoIP server can also get access to the stored voice data and the phone service itself, to eavesdrop or make free calls on your account.
Attack from viruses: If a VoIP server computer is infected with a virus, it can result in loss of phone service for you. It can also affect other computers connected to that system.
Unregulated technology: Though regulation is in progress, users are currently open to some specific vulnerabilities and scams.

For example, telemarketers can use VoIP to deliver enormous numbers of mechanical voice messages to consumers, sometimes resulting in a system shutdown. Criminals can also use a process called caller ID spoofing (displaying a false caller ID signature to call recipients) to pose as a trusted official to trick you into divulging sensitive account information.

Steps toward VoIP security

Use a junction box: Often supplied by a VoIP provider with your service package, a junction box brings VoIP directly into your conventional phone without the use of a home computer.
This helps insulate your phone from attacks and helps protect your computer from viruses it could pick up through the Internet.
Help secure your own computer: If you use a computer to access your voice mail and VoIP account from a provider's Web site, help keep that computer protected with a firewall, regular software updates, antivirus software, antispyware software and strong passwords.