SANS Exam SEC504 Topic 7 Question 21 Discussion

Adam, a malicious hacker has successfully gained unauthorized access to the Linux system of Umbrella Inc. Web server of the company runs on Apache. He has downloaded sensitive documents and database files from the computer.

After performing these malicious tasks, Adam finally runs the following command on the Linux command box before disconnecting.

for (( i = 0;i<11;i++ )); do dd if=/dev/random of=/dev/hda && dd if=/dev/zero of=/dev/hda done

Which of the following actions does Adam want to perform by the above command?