Germany's Federal Office for Security in Information Technology (BSI) has warned businesses of almost 20 threats when using voice over IP systems.
The body’s VoIPSec report, launched at a German IT trade show this week, comes as leading VoIP software provider Skype is warning its 60 million worldwide registered users to download two patches to prevent hackers from compromising their PCs.
US-based trade body the Computer Technology Industry Association (CompTIA) has also just published a survey which says the majority of SMEs don’t trust VoIP security.
The BSI said no major attacks had so far been unleashed on VoIP networks, but it said it was now only a matter of time before major problems emerged.
The BSI lists 19 varieties of attacks on VoIP systems, such as identity theft, data manipulation, incorrect billing and transmission errors, as well as virus and Trojan Horse attacks.
Authors of the report say companies should look closely at which parts of the business should adopt VoIP, and consider whether mission-critical applications should be served by the technology.