When should you turn on Lockdown Mode on your device?

Lockdown Mode is a security feature designed for scenarios where an individual is at a heightened risk of being targeted by advanced digital attacks, particularly by state-sponsored actors or sophisticated threat groups. Activating this mode provides an additional layer of security by severely limiting certain functionalities of the device, such as blocking most message attachments, disabling web technologies, and restricting access to certain apps. This mode is crucial for users who may have been specifically targeted for attacks, as it helps safeguard their device against potential vulnerabilities that could be exploited.

In contrast, while other scenarios mentioned might warrant caution or certain security measures, they do not relate to the specific and heightened risk that Lockdown Mode is designed to address. For example, performing a software update typically involves following standard security practices rather than implementing Lockdown Mode, which could interfere with the update process. Similarly, sharing sensitive documents online and accessing public Wi-Fi networks can be managed through other security protocols without needing the drastic measures of Lockdown Mode. Thus, option B aligns perfectly with the intended use of Lockdown Mode.