Security is a major concern for any business and when we talk about the VoIP industry, the concern becomes more serious. One of the major question raised by VoIP industry is that Which one is a Better Choice? SBC vs Firewall. All data and media traverse on internet lines, which is why interception of the lines and leakage of data is common. Moreover, the VoIP industry faces major security attacks from hackers and cyber attackers, which include DOS (Denial of Service) DDOS (Destructive Denial of Service) Toll fraud Call tampering Vishing VOMIT (Voice over Misconfigured Internet Telephones) SPIT (Spam