The strongest MFA program considers phishing resistance, user experience, recovery risk, administrator exceptions, and rollout practicality together.
Use this matrix to identify the best fit before turning the decision into a technical implementation plan.
| Method | Phishing resistance | Operational strength | Main weakness | Best fit guidance |
|---|---|---|---|---|
| Authenticator app TOTP | Medium to low; codes can still be proxied in real time. | Easy to deploy and familiar for users. | Phishable, recovery abuse, shared-seed handling. | Good baseline, but not enough for administrators or high-risk users. |
| Push MFA with number matching | Medium; stronger than simple push but still social-engineerable. | Good usability and broad workforce fit. | MFA fatigue, device compromise, weak recovery workflows. | Useful standard method when paired with risk controls and strong enrollment. |
| FIDO2 security keys | High; strong origin binding and phishing resistance. | Excellent for admins and high-risk users. | Hardware logistics, backup keys, support process. | Best fit for privileged users, finance, executives, and sensitive systems. |
| Passkeys | High when implemented with strong recovery and device controls. | Strong usability with modern platform support. | Recovery, sync trust, enrollment governance, mixed ecosystem support. | Best fit for broad rollout when identity governance and recovery controls are mature. |
| SMS OTP | Low. | Very easy to roll out. | SIM swap, carrier fraud, phishing, delivery reliability. | Use only as a temporary fallback or lower-assurance transition method. |
Use the comparison to frame requirements, risk tradeoffs, operating ownership, and implementation constraints before choosing a platform or control path.
Collect current configuration, ownership, user impact, audit requirements, incident history, integration dependencies, and the controls the team can realistically maintain.
Get specialist review when the choice affects privileged access, incident evidence, regulated data, customer commitments, or major migration work.
