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the claim

Facebook offers two-factor authentication as an optional security feature for user accounts.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Facebook offers two-factor authentication as an optional security feature for user accounts?

Yes. A reference list of Facebook features states that Facebook offers two-factor authentication called "login approvals" that users can turn on, requiring a code for logins from unrecognized devices. Other sources confirm Facebook uses two-factor authentication but do not address whether it is optional.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 4
List of Facebook features
Get citation
List of Facebook features. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/List_of_Facebook_features

See more details
More for · 3
Two-Factor Authentication Vulnerabilities
2018
Get citation
Stefan, Ć. (2018). Two-Factor Authentication Vulnerabilities. zenodo.org. https://doi.org/10.5281/zenodo.1226643

Two-factor authentication (2FA) comparison of methods and applications
2023
Get citation
Izabela, S., Sebastian, F., & Adrian, J. (2023). Two-factor authentication (2FA) comparison of methods and applications. zenodo.org. https://doi.org/10.5281/zenodo.10050024

Employing Two Factor Authentication Mechanisms: A Case Study
2014
Get citation
Cameron, L., Eric, F., Gerald, E., & David, F. (2014). Employing Two Factor Authentication Mechanisms: A Case Study. eric.ed.gov. https://eric.ed.gov/?id=EJ1140803

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