Multi-factor authentication requires more than a password to sign in. It is one of the most effective and accessible controls available to businesses.
Why passwords alone are not enough
Passwords are reused, guessed, and captured through phishing. When a password is the only barrier, anyone who obtains it can sign in. A second factor adds a separate requirement that is harder to steal at the same time.
Comparing methods
Hardware security keys and platform passkeys based on FIDO standards resist phishing well. Authenticator app codes and push approvals are widely used and much stronger than passwords alone, although push approvals can be abused through repeated prompts. SMS codes are better than nothing but are more vulnerable to interception and SIM swapping.
Where to apply it
Start with email, administrator accounts, remote access, finance systems, and cloud management consoles. Then extend coverage to all business applications.
Rolling it out
Communicate the reason for the change, provide clear instructions, offer support during enrollment, and define a secure process for account recovery. Recovery processes are frequently targeted, so verify identity carefully.
Keep improving
Review sign-in reports for unusual activity, disable legacy authentication methods that bypass MFA, and move high-risk users to phishing-resistant methods.
Key takeaways
- Prioritize admins and email.
- Prefer phishing-resistant methods where possible.
- Secure the account recovery process.
- Disable legacy sign-in methods.
This article provides general information and is not a substitute for advice specific to your organization.