I am quoting a part of the article here which is in the link here:
*"Year 2014 was the most damning in regard to Linux security: critical remotely-exploitable vulnerabilities were found in many basic Open Source projects, like bash (shellshock), OpenSSL (heartbleed), kernel and others. So much for “everyone can read the code thus it’s invulnerable”. In the beginning of 2015 a new critical remotely exploitable vulnerability was found, called GHOST.
Year 2015 welcomed us with 134 vulnerabilities in one package alone: WebKitGTK+ WSA-2015-0002. I’m not implying that Linux is worse than Windows/MacOS proprietary/closed software - I’m just saying that the mantra that open source is more secure by definition because everyone can read the code is apparently totally wrong.
Year 2016 pleased us with several local root Linux kernel vulnerabilities as well as countless other critical vulnerabilities. In 2016 Linux turned out to be significantly more insecure than often-ridiculed and laughed-at Microsoft Windows.
The Linux kernel consistently remains one of the most vulnerable pieces of software in the entire world. In 2017 it had 453 vulnerabilities vs. 268 in the entire Windows 10 OS. No wonder Google intends to replace Linux with its own kernel.
Many Linux developers are concerned with the state of security in Linux because it is simply lacking."*
I didn’t know about this. This is really shocking. I don’t think that any system/OS/whatever is secure at all. If a person wants to hack/cause harm and has the will to do so, then he would do it no matter what. Google is always watching us from above. So…we are never alone/private.