Which of the following is NOT a characteristic of malware?

Malware is malicious software designed to disrupt, damage, or gain unauthorized access to computer systems. One key characteristic of malware is that it is harmful rather than beneficial. Therefore, the idea that malware is generally beneficial for system performance is inherently incorrect, as all forms of malware aim to compromise the integrity and security of a system.

The other characteristics mentioned—such as causing a computer to slow down, spreading through email attachments, and creating security vulnerabilities—are typical behaviors of malware. It can degrade system performance by consuming resources or corrupting files, facilitate its spread through unsuspecting users via email, and exploit system weaknesses to gain access or control. These attributes underline the malicious intent of malware and its detrimental impact on systems.