Which of the following is a common way that malicious code is introduced?

Visiting infected websites is a common method for introducing malicious code because such websites can host a variety of threats, including malware, adware, and spyware. When users interact with these compromised sites, they often inadvertently download harmful software onto their devices. This may happen through malicious scripts embedded in the webpage, drive-by downloads, or even through seemingly innocuous links that lead to infected content. Users may not even be aware that they have downloaded malware, making this a particularly effective method for cybercriminals to compromise systems.

Physical access to the device can lead to potential threats as well, but it typically requires a different approach, such as manually installing malware. Utilizing updated antivirus software and regular system monitoring are actually preventative measures that help protect against the introduction of malicious code rather than methods of introducing it.