What is a common way malicious code can get into your system?

Malicious code often infiltrates systems through methods that exploit user behavior or vulnerabilities, and one of the most prevalent avenues is through email links or attachments. When a user clicks on a link in an email or opens an attachment, they may unknowingly allow malware to download onto their device, especially if the link directs them to a compromised website or the attachment contains harmful scripts.

This method is particularly effective because it relies on social engineering tactics that manipulate users into taking action. Cybercriminals often craft emails that appear legitimate, prompting users to trust the content and click on links or download files. This undermines the security measures that users may have in place, as they often do not expect to encounter threats in their regular communications.

In contrast, the other options do not typically present the same level of risk associated with malicious code intrusion. For example, visiting well-maintained and secure sites like the Air Force Portal or logging into systems for maintenance that have strong security protocols is generally safe, assuming proper security practices are followed. Backing up files to external media can also be secure if proper measures are taken to protect those files from malware before they are backed up. Thus, the method of clicking an email link or attachment stands out as a significant risk for introducing malicious