Is there fool proof softwares?

Question

So human being cant manipulate to cheat?

Answer 1

Nothing more complicated than 'Hello World!' application can be made 100% secure, there are techniques developers can use to lessen the extent of the vulnerability, but many of those things are quite difficult and most software developers don't bother.

Answer 2

Nothing is foolproof to a sufficiently talented fool.

Answer 3

Nope. Pretty much any software can be hacked, cracked or otherwise manipulated by someone with the right knowledge.