> For the complete documentation index, see [llms.txt](https://0xkourama.gitbook.io/blog/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://0xkourama.gitbook.io/blog/wi-fi-attacks/dos-flooding/dos-exploiting-countermeasures-mic-failure.md).
# DoS- Exploiting Countermeasures (MIC failure)
One countermeasure against DoS attacks is called "MIC failure" (Message Integrity Code failure). MIC is a form of cryptographic protection used in Wi-Fi networks, particularly those secured with WPA (Wi-Fi Protected Access) or WPA2 (Wi-Fi Protected Access 2) protocols. MIC ensures that data packets transmitted over the wireless network are not tampered with or altered in transit.
In the context of DoS attacks, a MIC failure can occur when the integrity of the data packets is compromised. Attackers might attempt to exploit vulnerabilities in the cryptographic algorithms or implementation flaws in the Wi-Fi access points or clients to manipulate the data packets in such a way that they pass the integrity check but contain malicious content.
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If an attacker has forged a victim user with two MIC Failure Reports, then this user is blocked for 1 minute.
If the attacker continues to send invalid attempts, the victim user will be banned.
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