Two-Factor Authentication (2FA): What It Is, How It Works, And Why It Matters
ESET, Thursday, November 20th, 2025
Two-factor authentication (2FA) adds a second layer of login security. Discover the best methods and how to enable them.
Why do we need two-factor authentication (2FA)?
Weak and/or stolen passwords are one of the biggest cybersecurity risks. In 2024, nearly half of surveyed Americans reported having their password compromised during the preceding year, with over three-quarters having personal information stolen from hacked accounts.
It's not just our information that's at risk. If hackers manage to hijack our online accounts and apps, they could also transfer funds, make fraudulent purchases, or even run up credit in our name. Securing the log-in process is therefore vital to keeping our digital identity and finances safe.