Welcome to the revival of DLTJ Thursday Threads. With the summer over and the feeling of renewal towards this blog and its topics, I'm happy to be back sharing tidbits of technology that I hope you will find interesting. Today's set of threads covers the gnarly security issues behind the …

The title of this post is true, under certain circumstances. Last week's e-mail brought word from Michael Robertson of Backdoor Dialing - Free Calling to Millions of U.S. Phones. By using Gizmo, the freely available, no-spyware computer-based telephony application, it is now possible to call about 10% of the mobile …