Researchers at NSS Labs say they ve spotted attacks that use Sipvicious, a common auditing tool for Voice over IP (VoIP) networks. The attacks are apparently aimed at taking control of VoIP servers to place unauthorized calls. The tool is intended to aid administrators in evaluating the security of their SIP-based servers and devices. Researchers say the latest attacks seem designed to create a base from which attackers can make VoIP calls from the victim s phone.
Source: https://threatpost.com/hackers-pushing-sipvicious-voip-tools-malicious-attacks-083111/75601/