Securing VoIP Networks: Threats, Vulnerabilities, and CountermeasuresCommunication between people has changed with the invention of the telephone. The ability to communicate across continents in real-time has also helped our society in several dimensions including entertainment, trade, finance, and defense. But this new capability did not come without an investment. Building an international telephony... | | | | New Dimensions in Photo Processes: A Step by Step Manual, Third EditionThe writing of this book was undertaken almost by accident. While I was freelancing as an illustrator, I showed my portfolio of photo images to Lista Duren, an editor at Curtin & London Publishing Company. Ms. Duren brought the portfolio to Dennis Curtin, who, on the spot, asked me to write a book about the techniques represented. Curtin &... |