This term shows up frequently in reputable sources so does not appear to be subject to WP:NEO: [1], [2], [3], [4], [5], [6], [7]
As to whether it should be merged or redirected to Computer security. I'd be inclined to accept it and then see if anyone wants to propose a merge as a second step. We're not required to get everything exactly right from the outset here. ~Kvng (talk) 23:22, 9 November 2018 (UTC)