Voip Telephony

Aspects of Voip telephony service

Asterisk SIP Security – Vishing Attacks

Vishing Near the end of last year (December 2008), the U.S. Federal Bureau of Investigation warned of a variation of a new type of vishing attack. By exploiting a bug in the open-source Asterisk VoIP software, criminals have been able to use vulnerable Asterisk systems as their own personal auto-dialers and call potential victims directly. […]