One of the new features in the game is distant hacking. There is a gun-like tool called 'Hack Tool.' When you fire it at a machine of any kind, you'll be able to hack it from a distance. Do it for 30 machines and the trophy/achievement is yours

An easy way to do this would be to stand under an unhacked Security camera, wait for the bots to come then hack them with the Hack Tool, rinse and repeat until you get the trophy/achievement (though it is easy to get the trophy/achievement without doing that anyway)