A new spam gateway was recently deployed at a small business. However, users still occasionally receive spam. The management team is concerned that users will open the messages and potentially infect

Adjusting the spam gateway might improve filtering, but it cannot prevent all sophisticated spam or phishing attempts that target user behavior.

Updating firmware for the spam appliance could fix bugs or improve performance, but it doesn't directly address the issue of users opening messages that bypass the filter.

Adjusting AV settings on endpoints helps detect malware after a user opens an infected attachment or visits a malicious site, but it's not the most effective preventive measure against users opening suspicious emails.

Providing user training is the most effective method because it empowers users to identify and avoid malicious emails that might bypass technical defenses, thereby reducing the human element risk of infection. While technical solutions catch most threats, sophisticated spam and phishing attempts often rely on social engineering to trick users.