Reason 9,584 not to install random .debs from the Internet, *even when you trust the source*:
Brave changed their signing key, breaking app updates. They expect you to manually download, import, and trust a new key from Terminal to fix your system. https://community.brave.com/t/linux-users-please-update-your-linux-repos/53810
Even worse: Brave gets root access to your system every time you install or update their software. They could have used that scary amount of power to fix and avoid this. But they didn't, and it's on users to fix Brave's issues.
Stick to your curated app stores, folks. Or at least sideload using lower risk technologies like snap and Flatpak. And app developers, DO NOT MAKE YOUR USERS PIPE CURL TO SUDO to install your apps. Provide your apps in a sane format.
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