Firewall can detect Brave browser and prevent user accessing your photos.
Brave is a free and open-source web browser developed by Brave Software, Inc. based on the Chromium web browser. It blocks ads and website trackers and provides a way for users to send cryptocurrency contributions in the form of Basic Attention Tokens to websites and content creators.
We as the Pasilobus team love the Brave browser. The built-in anti-tracking features are powerful. However, Brave goes to the extent to disable Photolock, even though Photolock is not a tracking tool & does not track user activity. (We have no tracking capabilities, see more in Privacy.)
Therefore to prevent users from visiting through Brave accessing your photos, you can turn on the Brave Browser blocker setting in Firewall, which will detect when Brave is interfering with Photolock and ask the user to revisit using a other browsers instead.