Aptos rolls out Encrypted Mempool to curb frontrunning, sandwich attacks
Aptos switched on an optional encrypted mempool on mainnet, with AIP-144 allowing transaction details to be encrypted before submission while sender addresses and gas fees stay visible. The rollout was described as keeping pending-trade details hidden until transaction order is finalized, and it was framed as a step aimed at reducing frontrunning and sandwich attacks. One report also tied the launch to the end of Aptos’s four-year token unlock schedule on the same day.
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Users who submit transactions on Aptos notice the change right away because the mempool now hides transaction contents before finality while still showing sender addresses and gas fees. That means people watching pending trades on the network see a different level of transaction privacy than before, but not a complete blackout of transaction metadata.
In practice, the network has an optional path for transactions that keeps details encrypted until order is finalized, while the visible parts of a transaction remain visible. What changes is the handling of pending-trade contents; what does not change is that sender addresses and gas fees are still exposed. (per cointelegraph.com)
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Has this happened before?
| When | What happened | Figure |
|---|---|---|
| 10 days ago | Aptos unveils MonoMove, claiming up to 55x faster smart contract execution event | 1 actors in common · 3 news media |
| 15 days ago | Aptos Pushes Private v1.49.2 Hotfix Candidate To Testnet Validators event | 1 actors in common · 3 news media |