Ban accounts for bot use
The best way to avoid phasing scams is to avoid clicking links that have been sent via e-mail to you or posted in the forums. When in doubt, they recommend manually visiting official NCsoft websites and navigating to the suggested areas yourself.
As explained in their recent GSU Message on Account Security, their fight against bots and gold sellers is not going to end tomorrow. They constantly ban accounts for bot use and Cronous gold selling. This month they enacted several massive bans totaling over 23,000 accounts in response to those issues.