The System Update utility is designed for in-place upgrades, allowing the technician to upgrade the OS while preserving user data and applications.

The first action should be to scan the smartphone for malware, since the alerts indicate suspicious activity and an unverified application installation, which may have introduced malicious software.

A potentially unwanted program (PUP) refers to software bundled with an installer that the user did not explicitly request and that's often advertised or installed without clear disclosure. While not always malicious, PUPs can degrade performance or introduce unwanted behavior, matching the description of undisclosed additional software in a package.

An incident report documents key details such as the cause of the outage, steps taken to resolve it, and measures to prevent recurrence. It is a post-mortem analysis often shared with stakeholders to improve future response.

The cat command is used on a Linux terminal to view the contents of a single file.