A computer, and especially hosting services (which often run Linux), are powerful communication and broadcasting systems into today’s world. If you control and have unfettered access to such systems, you basically control the world. Encryption is only as strong as its endpoints. eg if you’re running a very secure protocol on a system with a compromised OS, you’re owned. Be it Windows, Apple, Andriod, Symbian, Linux, BSD, or any other. Keep in mind how Linux is almost entirely engineered by the government / military affiliated Red Hat corporation.