“Being Annoying” as a Social Engineering Approach
KnowBe4
APRIL 18, 2022
Attackers are spamming multifactor authentication (MFA) prompts in an attempt to irritate users into approving the login, Ars Technica reports. Both criminal and nation-state actors are using this technique. Researchers at Mandiant observed the Russian state-sponsored actor Cozy Bear launching repeated MFA prompts until the user accepted the request.
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