What is an example of a security best practice for emails?

Regularly updating email passwords and enabling two-factor authentication is a vital security best practice for emails. This approach significantly enhances the security of email accounts, which are often targets for cybercriminals. By periodically updating passwords, users reduce the risk of unauthorized access that could occur if a password were compromised. Enabling two-factor authentication adds an additional layer of security by requiring a second form of verification, such as a code sent to a phone or an authentication app, which makes it much harder for an attacker to gain access even if they have the password. Together, these measures help protect sensitive information and maintain the integrity of communication.

The other options fail to provide adequate security: using one password for all emails increases vulnerability if that single password is compromised, ignoring unknown sender addresses leaves users susceptible to phishing attacks, and forwarding suspicious emails without proper verification can inadvertently spread malware or misinformation.