What is fileless malware and why is it important to understand as a malware reverse engineer?
a) A type of malware that does not use files on disk for execution; understanding it is crucial for detecting its presence.
b) A type of malware that relies on traditional file-based techniques for execution; understanding it is not important for reverse engineers.
c) A type of malware that only affects files without executing any malicious actions; understanding it is optional for reverse engineers.
d) A type of malware that is only found in files and does not affect systems without file-based execution; understanding it is not relevant for reverse engineers.