Hackers count on users working auto-pilot. Slow down and consider these three things:
Hackers rely on the fact that you and your team are too busy to notice that a link or attachment isn't right. Malicious attachments aren't always caught by your spam filters, email imposters have mastered the art of imitation, and even trusted websites are cluttered with links that will take you down a wrong turn. In the end, a majority of malware still requires some kind of end-user interaction to breach your network. Being aware and knowing what to look for is the best way to keep everyone secure.