In the context of email security, which practice enhances safety?

Implementing two-factor authentication significantly enhances security in the context of email. This practice requires users to provide two different forms of verification when logging into their accounts, typically something they know (like a password) and something they have (such as a smartphone app that generates a unique code).

This additional layer of security mitigates the risks associated with compromised passwords, as even if an attacker gains access to someone's password, they would still need the second form of authentication to successfully log in. This makes it much more difficult for unauthorized users to access sensitive information or accounts, thus protecting data integrity and confidentiality.

In contrast, practices such as using public Wi-Fi, sharing passwords via email, and sending data in plain text are known to significantly weaken security. Public Wi-Fi networks can be easily intercepted, making data transmissions vulnerable to eavesdropping. Sharing passwords over email can lead to accidental exposure and unauthorized access, while sending data in plain text does not encrypt the information, allowing it to be read by anyone who intercepts the communication.