$(document).keydown(function(e) {
// 67 == C
if (e.keyCode == 67 && e.ctrlKey) {
e.preventDefault();
console.log('no no no. you cant ctrl+c');
}
// 86 == V
if (e.keyCode == 86 && e.ctrlKey) {
e.preventDefault();
console.log('no no no. you cant ctrl+v');
}
});