Aptos Launches Encrypted Mempool to Shield Traders From MEV Attacks
Layer-1 blockchain network Aptos (APTUSD) has launched an optional Encrypted Mempool feature on its mainnet to shield users from maximal extractable value attacks, including frontrunning and sandwich attacks. The capability allows traders, institutional investors, and automated applications to keep transaction details hidden until block ordering is finalized.
When users opt in, compatible applications encrypt transaction details such as asset types and transaction amounts on the device before transmission. Network validators reach consensus on the sequence of pending orders without seeing their contents, then collectively decrypt and execute them. Because no single validator can decrypt pending transactions on its own, automated trading bots cannot inspect pending orders to execute profitable trades at the user's expense.
The added transaction protection comes with operational trade-offs, including a minimum gas fee set at double the base network minimum and an estimated 20 milliseconds of latency per block. Market participants will watch how broadly crypto applications and institutional users adopt the optional feature as network activity continues. Aptos was trading down 1.02 percent for the day at 0.7853 USD.
Key points
- Aptos launched an optional Encrypted Mempool feature on mainnet to protect users against frontrunning and sandwich attacks.
- Transaction details such as amounts and assets remain encrypted until block ordering is finalized by validators.
- Encrypted transactions require double the base minimum gas price and add about 20 milliseconds of latency per block.
- Aptos validators manage both transaction ordering and decryption without relying on separate external committees.
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How we writeDisclaimerQuestions and answers
What is the Aptos Encrypted Mempool?
It is an optional mainnet feature on the Aptos network that encrypts pending transaction details on the user device to protect against MEV attacks like frontrunning and sandwich attacks.
How does transaction encryption work on Aptos?
Compatible apps encrypt details such as asset types and trade sizes before sending transactions. Network validators order the encrypted transactions blindly before collectively decrypting and executing them.
What are the costs of using Aptos Encrypted Mempool?
Opting into encrypted transactions requires a minimum gas price double the network base minimum and adds approximately 20 milliseconds of latency per block in testing.