My principal browser is still Firefox. In some ways, it’s just because it’s different but it also seems to have fewer security and privacy issues than the Chromium Industrial Complex.
It’s far from perfect though and a nasty use after free bug was found and fixed this week.
It’s somewhat amazing that bugs like this are still found in mature pieces of software, but that is par for the course. It’s easy to forget to set a pointer to NULL after you are done with it and, in a huge codebase, easy to overlook.