why aren’t these corporations locking down TOTP to restrict them to their own validator apps
But they do. There are TOTP implementations that have been intentionally modified to prevent using standard apps. I don’t remember other examples right now, but I think Steam Guard is one.
I’m sure a lot of people (like myself) would refuse to install a special custom TOTP app just to be able to use one site. They’re only hurting TOTP adoption by doing that, and thus increasing the amount of support resources they need to allocate to account hacking / hijacking.
I’m sure there are other companies too willing to go against their economic interests for various reasons, but they’re going to be in the minority.
But they do. There are TOTP implementations that have been intentionally modified to prevent using standard apps. I don’t remember other examples right now, but I think Steam Guard is one.
I’m sure a lot of people (like myself) would refuse to install a special custom TOTP app just to be able to use one site. They’re only hurting TOTP adoption by doing that, and thus increasing the amount of support resources they need to allocate to account hacking / hijacking.
I’m sure there are other companies too willing to go against their economic interests for various reasons, but they’re going to be in the minority.