For years, the internet has been shrinking. Not in size, not in data, but in ownership. A vast, decentralized network of personal blogs, forums, and independent communities has been corralled into a handful of paved prison yards controlled by a few massive corporations. Every post, every “friend,” every creative work—
Go read the FIDO threat model if you want to understand how it protects against specific attacks. It is pretty secure.
https://fidoalliance.org/specs/fido-v2.0-id-20180227/fido-security-ref-v2.0-id-20180227.html