Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
This Alert comes from your Azure Firewall Premium which has IDPS enabled.
It appears you had enabled Structured Logs in the Azure Firewall, and this is what is giving the alert.
Please refer to the below documents for further information,
- Azure Structured Firewall Logs | Microsoft Learn
- Azure Monitor Logs reference - AZFWIdpsSignature | Microsoft Learn
- Azure Firewall IDPS signature rule categories | Microsoft Learn
Please let us know if we can be of any further assistance here.
Thanks,
Kapil
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