Why is it necessary to reconfirm the email and combine it with similar exchange 2FA features during migration?

With the rapid development of blockchain technology, migrating digital currency wallets has become an important operation that many users must face. Pi Network's recently released two-step verification (2FA) mechanism requires users to verify their identity through a trusted email when migrating Pi to the Mainnet blockchain. This initiative seems to increase the operational steps, but there are profound security considerations behind it. This article will analyze why it is necessary to reconfirm the email during the migration process and combine it with similar exchange 2FA functions from the perspectives of security, user asset protection, and technical implementation.