VoIP, like almost all other technologies, can be abused; it’s susceptible to attacks that allow calls to be hijacked, fraudulent calls to be made or even gain unauthorized access to the corporate data network. For all the benefits of VoIP it is important to be aware of and realistic about the risks that need to be mitigated. SIP and other VoIP channels need to be secured the same as any company laptop or facility, and the great news is that securing VoIP is simple as long as you do a little planning first.
One of the biggest abuses of VoIP comes in the form of toll fraud. WIRED contributor Jim Murphy reminds us that toll fraud has been around for decades and was a common problem even in the arcane days of landline telephones. The threat never went away nor is it new; it simply evolved. Learning how to handle it in its modern incarnation is critical to protect your enterprise communications from the unsavory predators of the internet.