When Marcus Cicero, a famous philosopher and statesman during the fall of the Roman Republic, said "Man is his own worst enemy," he wasn't talking about end-user security.
Still, this quote embodies one of the largest security issues that IT faces: Users often cause security breaches. IT professionals shouldn't assume users know security best practices. Instead, they should turn to end-user security training to improve user decision-making.
Quiz yourself on end-user security training practices to determine if you know how to plan and carry out an effective training process.