VoIP is poised to take over from the century-old public switched telephone network (PSTN). But VoIP telephony does not enjoy the same privacy as the old PSTN. This is because PSTN phone calls were based on establishing a “closed circuit” between the two parties, while VoIP phone calls send packets through the Internet, which...

Solve everyday PC problems, improve performance and speed, and protect yourself from malicious attacks with the helpful tips in this user-friendly guide. Easy-to-follow "recipes" show you, click-by-click, how to prevent computer catastrophes and recover completely...

Windows XP is the most popular operating system on the planet--and the most annoying. From incomprehensible error messages to inexplicable crashes, from wonky wireless setups to just finding a file, Windows can make your computing life a nightmare. But thanks to Fixing Windows XP Annoyances, you...

• Understand how Exchange Server 2013 works with previous...

Many people have no idea of the evils that exist across the Internet or the danger that can result from simply answering an innocent-sounding e-mail or participating in a chat. Your loved ones could unknowingly be putting themselves in grave risk. By using...

Homes are becoming increasingly wired and, thanks to Wi-Fi, unwired. Hackers can strike quickly and create disastrous results! These stories and follow-ups are a fascinating insight into the modern threats we all face in the techno jungle. Written by internationally recognized author, John Biggs, this book is an ideal read...

Sys admins can field scores of complaints and spend months testing software suites that turn out to be too aggressive, too passive, or too complicated to setup only to discover that SpamAssassin (SA), the leading open source spam-fighting tool, is free, flexible, powerful, highly-regarded, and remarkably effective. The...

See it done. Do it yourself. It’s that Easy! Easy Computer Basics, Windows 7 Edition  teaches you the fundamentals to help you get the most from your computer hardware and software. Fully illustrated steps with simple instructions guide you through each task, building the skills you need to perform the most common computer tasks....

I believe that mobile marketing is the marketing of the future. My name is Cindy Krum, and I am the author of Mobile Marketing: Finding Your Customers No Matter Where They Are. This book is intended to be a comprehensive guide for marketers and anyone who wants a clearer understanding of how they can integrate mobile marketing with their...