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MFA is not a silver bullet to secure your cloud email

ID: 69675b54-4c44-5026-bcda-0543f4ade86c

STIX ID: report--69675b54-4c44-5026-bcda-0543f4ade86c

Feed Name: Expel Blog

Date Published: 2019-10-02

Date Updated: 2026-04-27

Author: Andrew Pritchett; Anthony Randazzo

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**Executive Summary:** Organizations migrating to cloud email (Office 365, G Suite) should enforce modern authentication and layered access controls — disable legacy protocols (IMAP/POP) and basic authentication that can bypass MFA, monitor for legacy/basic-auth user agents, and implement conditional access policies to reduce the risk of account compromise and business email compromise.

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