Don't just fling unsecured open source OSes at world+dog, father of the Internet begs
No you can fling unsecure closed source OSes at the at world+dog as well, Windows 10 IoT is available.
Nothing is secure, see the excellent edge browser>windows kernel>VMware hack at pwn2own
https://www.zerodayinitiative.com/blog/2017/3/17/the-results-pwn2own-2017-day-three