Seed phrase
A recovery phrase can make it possible to reconstruct a compatible wallet. It is therefore highly sensitive information, not a normal support or verification credential.
Two-factor authentication
2FA adds a second check when accessing an account. Different methods provide different levels of resistance to certain attacks.
Phishing
Phishing imitates legitimate pages, messages or identities to obtain credentials. Learning to recognize domains, unusual requests and urgent messages is part of good digital hygiene.
What does it mean to sign a blockchain interaction?
A cryptographic signature can authorize different actions. Understanding permissions, signature messages and contracts helps explain what a wallet is requesting.