The trading app, which was acquired by FTX in 2020, now bears its owner's name.
The twin crypto trading hubs plugged into Circle’s payments and banking API Friday.
A "Signals" account has been blocked after making racist posts available to all users of the app.
The app offers trading of crypto assets as well as tokenized stocks listed on derivatives exchange FTX.
The deal is a strategic play for FTX, whose clientele consists largely of quants and professional traders, to attract more retail customers.
The security vulnerability, which appeared in older versions of its application, could have allowed a bad actor to steal closed source code and possibly inject their own code into Blockfolio’s Github repository and, from there, into the app itself.