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GuidoImpe's avatar
GuidoImpe
Brass Contributor
Feb 26, 2025
Solved

Dynamic Blocklist in Microsoft Defender XDR

Hello Community,

I have one question, and i think that is a request that could be useful to everyone.

We have a Dynamic list that are published over internet in read-only (into this list we put ioc like malicious domain or bad ip reputation) is a txt file.

There are a possibility from MDE o MDC to block all connection to this ioc ?

or MDE and MDC not support Dynamic BLocklist ?

Regards,

Guido

  • Hi GuidoImpe,

    Currently, as far as i know, MDE and MDC don’t directly support blocking based on a dynamic blocklist (like a txt file with IOCs). You can integrate threat intelligence, but automatic blocking of dynamic IOCs in real-time would require a more manual or custom setup, such as using custom indicators in Defender or leveraging third-party solutions.

    Hope that helps!

    Regards,

  • luchete's avatar
    luchete
    Steel Contributor

    Hi GuidoImpe,

    Currently, as far as i know, MDE and MDC don’t directly support blocking based on a dynamic blocklist (like a txt file with IOCs). You can integrate threat intelligence, but automatic blocking of dynamic IOCs in real-time would require a more manual or custom setup, such as using custom indicators in Defender or leveraging third-party solutions.

    Hope that helps!

    Regards,

    • GuidoImpe's avatar
      GuidoImpe
      Brass Contributor

      Thanks luchete for your feedback, yes i have checked and from Threat Intelligence is possibile with more customization import IOC.

      I acccept your answer as a Solution

      Regarda,

      Guido

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