SIM-Swap Attack
An attack in which someone transfers your phone number to their own SIM card to intercept SMS codes and reset your accounts.
✦ Key Insight
SMS is still the default second factor on many platforms, which makes a phone number a single point of failure for an entire portfolio.
✕ Common Misconceptions
Leaving SMS as your two-factor method. Move to an authenticator app or hardware key, add a carrier port-out PIN, and remove your phone number as a recovery option where possible.
Detailed Explanation
In Practice
Dig Deeper
Wallet
Software or hardware that stores your private keys and lets you sign transactions.
Token
An asset created by a smart contract on an existing blockchain rather than being that blockchain's native currency.
Blockchain
A shared, append-only record of transactions maintained by many independent computers at once.
Transaction
A blockchain transaction is a signed or authorized instruction that changes blockchain state or transfers value when accepted by the network.