Which employee behavior would be a top security concern?

Leaving laptop computers unattended in public spaces poses a significant security risk. This behavior makes it easy for unauthorized individuals to access sensitive information, steal the device, or implant malware without the owner's knowledge. Laptops often contain critical personal and work-related data that could lead to data breaches, identity theft, and loss of company assets if they fall into the wrong hands.

While the other behaviors mentioned may seem unprofessional or could lead to minor distractions, they do not directly compromise the security of data or devices to the extent that leaving a laptop unattended does. For example, consuming beverages near computers, hitting the keyboard in frustration, or using office computers for personal emails, while they might raise other concerns regarding etiquette or productivity, do not present immediate risks of unauthorized access or theft that unattended laptops do. Therefore, the highest security concern among these behaviors clearly relates to unattended laptops in public areas.