Concepts
Authentication
In Turkish: Kimlik doğrulama
Proving you are who you say you are, for example with a password, a code, a fingerprint or a passkey.
A service can check something you know (a password), something you have (a phone or key) and something you are (a fingerprint or face). Using two of these together is what two-step verification does.
It is different from authorization, which decides what you may do once you are in.
What to do
- Use at least two kinds of proof for important accounts.
- Prefer methods that cannot be typed into a fake site, like passkeys.
- Never give your proof (code, password) to someone who contacts you first.