A security guard finds a USB drive near an employee entrance. The device looks ordinary. A label on the side reads: Payroll Review — Confidential It could belong to an employee. It could contain important company information. The helpful response seems obvious. Plug it into a computer. Open the files. Find the owner. That helpful response may be the attack. No one forced a door. No one used a disguise. No one confronted the security guard. The attacker used curi