Cisco predicted VOIP abuse as a potential area for cyber crime growth. Vhishing and SPIT (spam over internet telephony) get the most attention as VoIP problems. Almost 80 percent of businesses will use Voice over Internet Protocol by 2013, according to market research firm In-Stat. Criminals can also route their calls over the unsecured gateway to other sources, bypassing long distance charges and international call charges. There are several ways to abuse VoIP technology are gaining popularity.”]
Source: https://www.csoonline.com/article/2127420/3-simple-reasons-voip-abuse-will-grow.html