Multi-factor authentication fatigue attack

A multi-factor authentication fatigue attack (or MFA fatigue attack) is a computer security attack against multi-factor authentication that makes use of social engineering.[1][2][3] When MFA applications are configured to send push notifications to end users, an attacker can send a flood of login attempt in the hope that a user will click on accept at least once.[1]

In September 2022 Uber security was breached by a member of Lapsus$ using a multi-factor fatigue attack.[4][5]

In 2022, Microsoft has deployed a mitigation against MFA fatigue attacks with their authenticator app.[6]

Further reading
  • Haworth, Jessica (2022-02-16). "MFA fatigue attacks: Users tricked into allowing device access due to overload of push notifications". The Daily Swig. PortSwigger. Retrieved 2023-01-26.

References
  1. "MFA Fatigue: Hackers' new favorite tactic in high-profile breaches". BleepingComputer. Retrieved 2023-01-26.
  2. Burt, Jeff. "Multi-factor authentication fatigue can blow open security". www.theregister.com. Retrieved 2023-01-26.
  3. Constantin, Lucian (2022-09-22). "Multi-factor authentication fatigue attacks are on the rise: How to defend against them". CSO Online. Retrieved 2023-01-26.
  4. Whittaker, Zack (2022-09-19). "How do you stop another Uber hack?". TechCrunch. Retrieved 2023-08-24.
  5. Hardcastle, Jessica Lyons (2022-09-19). "Uber explains how it was pwned this month, points finger at Lapsus$ gang". The Register. Retrieved 2023-08-24.
  6. Tung, Liam. "Microsoft Authenticator gains feature to thwart spam attacks on MFA". ZDNET. Retrieved 2023-01-26.


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