An information security specialist is reviewing the following output from a Linux server. Based on the above information, which of the following types of malware was installed on the server?
I love this question. Joe appears to be the culprit too. He's got a script that is grepping the passwd file for his own name. If his name is no longer present in the file, he assumes he's been fired and so deletes the contents of the directory. Logic Bomb.
! means negation, so the script is checking existence of joeuser on the systems. If that results in error (logical false; user not found) the system is erased: rm -rf / .. hence it's logical bomb.
A is correct. Think of the Logic bomb in the output as a code having "if" "else" statements. If Michael leaves then corrupt the system else don't do it.
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