CISA Releases Guidance on Phishing-Resistant and Numbers Matching Multifactor Authentication 

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CISA has released two fact sheets to highlight threats against accounts and systems using certain forms of multifactor authentication (MFA). CISA strongly urges all organizations to implement phishing-resistant MFA to protect against phishing and other known cyber threats. If an organization using mobile push-notification-based MFA is unable to implement phishing-resistant MFA, CISA recommends using number matching to mitigate MFA fatigue. Although number matching is not as strong as phishing-resistant MFA, it is one of best interim mitigation for organizations who may not immediately be able to implement phishing-resistant MFA.  

CISA recommends users and organizations see CISA fact sheets Implementing Phishing-Resistant MFA and Implementing Number Matching in MFA Applications. Visit CISA.gov/MFA for more information on MFA, including an infographic of the hierarchy of MFA options.

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