Free CompTIA Security+ SY0-601 Practice Question

This statement is true. A fileless virus operates by injecting malicious code into running processes in the computer's memory (RAM), avoiding detection by traditional file-based antivirus software. Unlike traditional malware, it does not rely on files on the hard drive to execute. Other answers may seem plausible because they contain elements commonly associated with various types of malware, but they do not accurately describe a fileless virus.