Eavesdropping is the intentional act of secretly listening in on a conversation, usually not for the best of intentions. Although today the act also includes VoIP telephone systems, it’s not a recent trend. As exemplified by the SIPtap attacks of 2007 and the Peskyspy trojans of 2009, cybercriminals have had their eye on VoIP ever since it was introduced to the market.
The financial services industry has long been a heavily targeted sector by cyber criminals. The number of attacks that involved extortion, social-engineering and credential-stealing malware surged in 2015. This means that these institutions should strive to familiarize themselves with the threats and the agents behind them.