Phishing emails are one of the most common threats to your business environment. A skilled attacker will make these emails seem very convincing, even for tech-savvy users. They may appear to be from a person or business you communicate with frequently, and typically attempt to create a sense of urgency. User education is your first line of defense, and a strong firewall with DNS blocking is a great way to help your users avoid these traps by blocking the legitimate-looking links before the scam page is presented.