I'm curious about this encrypted VoIP network. I've never heard of an off-the-shelf product like that, so was it custom-written? What was the interface like?
The source NYT article has some more details, but not enough to answer these questions:
One of Mr. Guzmán’s Colombian suppliers, Jorge Cifuentes,
who introduced the kingpin to the I.T. expert, testified
last month that Mr. Rodriguez had promised to arrange
secure communications for what amounted to the entire
cartel’s leadership. His system operated on VoiP, or voice
over internet protocol, Mr. Marston said on Tuesday, and
was accessible only to those within the network. According
to Mr. Cifuentes, Mr. Guzmán was able to sign in through
Wi-Fi even from his hide-outs in the Sierra Madre
mountains.
The source NYT article has some more details, but not enough to answer these questions:
https://www.nytimes.com/2019/01/08/nyregion/el-chapo-trial.h...