Years ago, in the 2009-2010 timeframe, a telecom operator the "next rack over" told me that Linux didn't have the necessary security structures for telephone conversations and BSD had them. He used OpenBSD because what he wanted to do wasn't practical in Linux. I really didn't follow up and don't know what the advantages of were for BSD deployments back then.
If you wanted to describe the inherent security advantages of BSD over Linux today, this would be welcomed. A lot has happened in 9-10 years in both BSD and Linux. At one time, I though BSD was a contender for Linux. Because of the volume, I'm not sure of this presently. Mike Mazarick --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus