What is security of the mind ?
If for some reasons you don't own yourself fully then there's no way for you to defend or protect yourself from things like cognitive infiltration, organized propaganda, disinformation and brainwashing... That's my definition of 'neurosecurity'.
However, when you start to realize the critical importance of being able to think of something by yourself (out of the box...) without any authority to guide or influence your thinkings, then it is perhaps becoming possible to find genuine ways for you to protect your whole mind and body agaisnt mediocre minds telling you what to think.
tk