Voice over Internet Protocol (VoIP) networks have freed users from the tyranny of big telecom, allowing people to make phone calls over the Internet at very low or no cost. But while VoIP is easy and cheap, it's notoriously lacking in security. With minimal effort, hackers can eavesdrop on conversations, disrupt phone calls, change caller IDs, insert unwanted audio into existing phone calls, and access sensitive information.
Über den Autor und weitere Mitwirkende
Himanshu Dwivedi is a leading security expert and researcher. He has published four books, "Hacking Exposed: Web 2.0" (McGraw-Hill), "Securing Storage" (Addison Wesley), "Hacker's Challenge 3" (McGraw-Hill), and "Implementing SSH" (Wiley). A founder of iSEC Partners, Himanshu manages iSEC's product development and engineering, specialized security solutions, and the creation of security testing tools for customers.