Which sequence correctly describes steps to remove malware after detection?

Which sequence correctly describes steps to remove malware after detection?

• A. Reboot the system and immediately reinstall the OS.
• B. Run only Disk Defragmenter.
• C. Reboot, run antivirus in safe mode, remove threats, update OS/apps, reboot, monitor.
• D. Disable antivirus to avoid false positives.

Answer: (C)

A solid malware cleanup sequence focuses on disrupting the malware’s startup, thoroughly removing it, and then closing the gaps it could use to return. Starting by rebooting the system in a mode that limits startup programs helps because many threats hide or load only when the full operating system is running. Safe mode achieves this, making it easier for the antivirus to detect and remove malicious components. Running the antivirus in this mode increases the chances of catching hidden or stubborn threats and allows it to quarantine or delete them effectively. After threats are removed, updating the operating system and applications patches known vulnerabilities and reduces the chance the same malware or similar ones will reinfect the machine. A final reboot helps ensure all changes take effect and the system starts clean with the updated protections. Finally, ongoing monitoring checks that the infection doesn’t persist or reappear and helps catch any lingering indicators early. Why other approaches aren’t appropriate: simply rebooting and reinstalling the OS is an excessive step that discards usable data and takes more time than necessary for most cleanups. Running a tool that only defragments disks won’t address malware at all. And disabling antivirus to avoid false positives is risky and undermines protection, potentially allowing malware to remain active or spread. This sequence—clean scan in a minimized startup, remove threats, patch defenses, reboot, and monitor—provides a thorough, practical approach to regain a secure system.

A solid malware cleanup sequence focuses on disrupting the malware’s startup, thoroughly removing it, and then closing the gaps it could use to return.

Starting by rebooting the system in a mode that limits startup programs helps because many threats hide or load only when the full operating system is running. Safe mode achieves this, making it easier for the antivirus to detect and remove malicious components. Running the antivirus in this mode increases the chances of catching hidden or stubborn threats and allows it to quarantine or delete them effectively. After threats are removed, updating the operating system and applications patches known vulnerabilities and reduces the chance the same malware or similar ones will reinfect the machine. A final reboot helps ensure all changes take effect and the system starts clean with the updated protections. Finally, ongoing monitoring checks that the infection doesn’t persist or reappear and helps catch any lingering indicators early.

Why other approaches aren’t appropriate: simply rebooting and reinstalling the OS is an excessive step that discards usable data and takes more time than necessary for most cleanups. Running a tool that only defragments disks won’t address malware at all. And disabling antivirus to avoid false positives is risky and undermines protection, potentially allowing malware to remain active or spread.

This sequence—clean scan in a minimized startup, remove threats, patch defenses, reboot, and monitor—provides a thorough, practical approach to regain a secure system.