Threats and Usability of Secure Voice
In my previous post I found that end-to-end encryption with OSTN is both effective and usable. There are two important things the user must be aware of when using OSTN. They must confirm with each phone call that the encryption…
A Network Analysis of Encrypted Voice over OSTN
Introduction to OSTN The OSTN network stands for Open Source Telephony Network. It is a federated network standard for supporting Internet calling with end-to-end encryption ala ZRTP. Its very similar to e-mail in that VOIP calls can be routed to…
OSTN secure VoIP wizard now built into CSipSimple for Android
If you saw our last post about how to setup your own secure voice-over-IP server instance, then this news is for you. If you are an Android user looking for the best open-source VoIP app, and really need one that…
Build your own Open Secure Telephony Network, some assembly required
The Open Secure Telephony Network is a standard that defines how to configure a VoIP softswitch with the capability to have secure two-way VoIP conversations if both parties are using the same server. The system requires both backend and frontend…
Singing and Dancing for Encryption
If you see me dancing or signing with my phone in my hand, I may not just be having a great time, but also creating an encryption key. Part of the issue with security is that it can often be…
The Only Way to Visit Strongbox on a Phone
GnuPG for Android progress: we have an command
Security Awareness Party
