ISO Contains a UEFI Bootloader That has Been Revoked

[WhoIsConch]

Hi there! Today, I decided to try out using Nitrux. It worked okay in Virtualbox, but I wanted to try out Nitrux Live on my laptop. However, when flashing the ISO to Rufus I got an error that reads:

Rufus detected that the ISO you have selected contains a UEFI
bootloader that has been revoked and that will produce a
•Security Violation• screen, when Secure Boot is enabled on a
fully up to date LIEFI system,

And, sure enough, when trying to boot from the USB on my laptop, I get a security violation error. I just wanted to know what was up with this and what my next step would be if I still wanted to use Nitrux on a PC. Thanks!

[UriHerrera]

As noted in the tutorial about installing the distribution.

⚠️ Important: Rufus 4.2.4070 Beta introduced a feature to the software to display a warning about revoked UEFI bootloaders, "Add detection and warning for UEFI revoked bootloaders (including ones revoked through SkuSiPolicy.p7b)." This will cause Rufus to display a warning message. Users can ignore this warning as the bootloader post-installation is signed; however, the bootloader in the ISO isn't signed, nor the Liquorix kernel is signed, and the distribution will not boot with Secure Boot enabled; see System Requirements.

See this issue at the Rufus repository for context about this warning.
Also, see this reply in a Reddit thread of the Rufus developer about why that was implemented.

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TL;DR

It's a new "feature" in Rufus that caters to Microsoft's Secure Boot infrastructure.