Brave Browser is undeniably a commercial product first, and a privacy-centric web browser second. While the browser does have quite a few improvements to privacy compared to stock Chrome, it's designed to promote the use of a cryptocurrency (BAT) that Brave itself owns, and it has a referral program that pays browser users by how many people they can get to download Brave. Now the browser has been caught injecting its own affiliate codes into web addresses for popular cryptocurrency trading websites.
The issue came to widespread attention yesterday, when Twitter user @Cryptonator1337 pointed out that Brave Browser auto-filled a referral code to the end of the web address when "binance.us" is typed into the address bar. Binance is a cryptocurrency trading website, and with that referral code, Brave Software could earn 20% from trading fees for every account created using the link.
So when you are using the @brave browser and type in "binance[.]us" you end up getting redirected to "binance[.]us/en?ref=35089877" - I see what you did there mates 😂