Dirty tricks during political campaigns are nothing new, but the Internet and the proliferation of mobile devices have allowed tricksters to up their games a notch. It came to light last week, for example, that Donald Trump’s campaign app was hoovering the address books on his supporters’ phones. Trump’s app wasn’t doing anything illegal. It wasn’t even trying to hide what it was doing. The app seeks the user’s permission to download all contacts before it does so. However, both the ACLU and EPIC have rapped the practice.