The top attack to be on the lookout for is remote eavesdropping, says Sachin Joglekar, vulnerability research lead for Sipera VIPER Lab. Eavesdropping is exponentially easier in VoIP than with traditional PSTN telephone networks. Eavesdropping can represent a major communications and security breach. Those overheard conversations can be used to gather intelligence from competing businesses, or worse, used as blackmail for financial gain.
Last month, San Jose, Calif.-based Cisco Systems issued a security alert that identified 11 models of its Cisco Unified IP Phone 7900 Series handsets that were vulnerable to eavesdropping attacks. According to the networking giant, all Cisco IP phones that support Extension Mobility, which allows users to log into a phone and temporarily configure it as their own, were vulnerable to the attack. [READ MORE]