Which of the following is a common threat to portable devices?

Data leaks represent a significant threat to portable devices due to the inherent nature of such devices being mobile and often accessing unsecured networks. Portable devices, like smartphones and tablets, frequently store sensitive information such as personal data, financial information, and corporate resources. When these devices connect to public Wi-Fi or other unsecured networks, they can expose this sensitive information to potential interception and unauthorized access.

Moreover, if a portable device is lost or stolen, the data it holds can be easily accessed by the finder or thief if proper security measures, such as encryption and strong authentication, are not in place. This makes data leaks a critical concern, as they can lead to identity theft, financial loss, and breaches of confidentiality, impacting both individuals and organizations.

In contrast, the other options do not represent immediate threats. Increased bandwidth, firmware updates, and enhanced battery life generally offer benefits rather than vulnerabilities. Increased bandwidth can improve connectivity, firmware updates often patch security vulnerabilities, and enhanced battery life allows for prolonged use of secure applications. Thus, these aspects can contribute positively to the functionality and security of portable devices when properly managed.