Voice Over Internet Protocol (VoIP) is a technology which is
only two decades old. But VoIP is getting very popular in the current market of
communication. But with the popularity, the security concern of VoIP network
has also increased.
VoIP fraud is a major concern in the present days. A single
fraud event can easily cost a company between three and fifty thousand dollars
or even more. According to the CFCA report, phone fraud is growing at a rate of
29% per year. As the popularity of VoIP continues to grow, the problem of VoIP
fraud will become an increasing threat to the industry.
Different Types of VoIP Frauds
Fraudsters can attack a VoIP network various ways. Some of the
techniques are stolen from the traditional phone fraud tactics, others from
computer hacking techniques, and others exploit VoIP specific equipment and
software.
Arbitrage, buffer overflow, bypass fraud, call transfer fraud,
PBX hacking, subscription fraud are just a few names in the list of VoIP
fraudulent activities.
VoIP Fraud Detection Techniques
Today, most fraudsters attack the underlying and supporting
infrastructure. The major IP PBX vendors can be secured, but security has to be
considered during the network deployment. It’s important to consider your
existing network security before adding VoIP components.
Call
detail record Analysis
Analyzing Call Detail Records is the most simple way to check
fraud activity on the network. VoIP providers should put into place a system
that detects the most common symptoms of fraud and PBX hacking, traffic spikes,
unusual call patterns, etc. This type of system should be real-time to get the
best result. In addition, a system should be there to monitor the analysis
periodically and the system should alert on suspicious activity or even temporarily
block the suspicious routings.
Limiting
Routes
VoIP service provider should avoid all its customers the
access of all the routes. High price and fraud areas should be limited to
customers and access to those areas should only be given if the service is
necessary to the clients.
Session
Border Controllers
Session Border Controllers, which work in front of an IP
connected PBX can be a deterrent to fraud. The SBC can detect and stop attempts
to guess user credentials or unauthorized attempts to route traffic. Some SBCs
can analyze call patterns and dynamically learn your normal traffic patterns,
sending warnings when something deviates from the norm. Session Border
Controller cannot, however, detect Traffic Pumping attacks.
Denvo Labs Service for VoIP Fraud
Detection
At Denovo Labs, our primary concern is to provide a well
secure VoIP routing solution. Our high CPS switch is capable of blocking off
fraudulent calls that are meant to disable your switch with high volume. DNL
switches also allow auto blocking and the user setup maximum call minute and
usage amount by hour or day. On any suspicious activity, our system will send
out alert or block the client.
Our system also prevents unauthorized login to your portal by
controlling the IPs allowed for each user. The admin user can even setup
different roles with different read/write access for each menu.
So if you want to have a VoIP service which has a secure
infrastructure and also provide real-time fraudulent activity detection, then
you should definitely check the VoIP services we are providing at DNL.
