A technician has been unable to remediate a persistent malware infection on a user's workstation. After the technician reinstalled the OS, the malware infection returned later that day. Which of the following is the most likely source?
Answer is B--A boot sector virus is a type of malware that infects a computer's boot sector, which is a reserved area on a disk that contains the instructions needed to start the operating system. The virus loads itself into the device's memory as soon as the computer boots up, before security software can run
Bootkits are very similar to rootkits, but instead of infecting the kernel, they go for the Master Boot Record (MBR) or the Volume Boot Record (VBR). MBRs and VBRs are records stored in your computer's disk that help to start (or 'boot') your operating system from the hard drive when you first turn on your computer.
D. Rootkit
Rootkits are particularly stealthy and persistent forms of malware that can embed themselves deeply within the operating system. Even after reinstalling the OS, if a rootkit is present, it can remain undetected and continue to infect the system. Rootkits often have the capability to reinstall themselves even after system reinstallation or other remediation attempts. Therefore, a rootkit is the most likely source of the persistent malware infection in this scenario.
Both GPT and Gemini seem to agree.
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