I downloaded the portable version from here:

GitHub - portapps/brave-portable: 🚀 Brave web browser portable for Windows

I scanned the exe file with Bitdefender and Malwarebytes free. Both came up clean nevertheless I got that "Stranger App, Danger Warning." It appears that the file isn't signed or the certificate is bad or unrecognized and it is copyrighted by CrazyMax : )

crazy-max (CrazyMax) . GitHub

Is any of this a concern? TIA.