Which of the following is not a common method for spreading malware? Email attachments Social engineering Phishing System updates

System updates are not a common method for spreading malware. While it's possible for a system update to contain malware if it's from an untrustworthy source, legitimate updates from the system's manufacturer or software developer are typically safe and are actually important for protecting your system against malware.

On the other hand, email attachments, social engineering, and phishing are all common methods used by cybercriminals to spread malware.

1. Email attachments: Cybercriminals often use email attachments to spread malware. They send emails with infected attachments to unsuspecting users. When the user opens the attachment, the malware is installed on their device.

2. Social engineering: This involves manipulating people into