Aptos Encrypted Mempool Launches to Curb MEV
Aptos has launched its optional encrypted mempool on mainnet, giving compatible wallets and apps a way to conceal transaction instructions, assets and amounts while validators determine transaction order. The Aptos encrypted mempool is designed to reduce maximal extractable value (MEV), including frontrunning and sandwich attacks. Validators collectively decrypt transactions after ordering is finalized, but sender addresses and gas-fee information remain visible, so the feature does not provide full anonymity.
Users can enable encryption one transaction at a time. Aptos says tests with 50 validators added about 20 milliseconds of latency. Encrypted transactions require a minimum gas price twice the base rate, plus 375 gas units for decryption. Petra wallet supports the feature, while the Decibel exchange plans to use it for pending orders. The tool is aimed at traders, institutions, AI agents and developers, but adoption depends on wallet and app support.
The launch comes amid broader efforts to curb transaction-ordering exploits. The cited figures include about $60 million in Ethereum sandwich-attack losses over the 12 months ending October 2025 and nearly 6.9 million attacks on Solana over 11 months, affecting roughly 2.2 million wallets and generating $29.7 million for bots. These figures relate to other networks and do not establish equivalent losses on Aptos. APT was reported near $0.80, down 11.5% in 24 hours, indicating no immediate positive price response. For traders, the feature offers optional MEV protection, but added costs and limited privacy may constrain uptake.
Neutral
The launch is a potential long-term positive for Aptos because reducing frontrunning and sandwich attacks could improve execution quality and make the network more attractive to traders, institutions and developers. Integration by Petra and planned use by Decibel provide early routes to adoption. However, the feature is optional and requires compatible apps; its higher minimum gas price, added decryption cost and limited privacy may deter users. The reported 20-millisecond latency also adds a trade-off to consider. In the short term, APT was reported down 11.5% over 24 hours near $0.80, with no immediate positive market response. Since the update does not directly change token supply or guarantee higher network activity, the overall price impact is best assessed as neutral. Longer-term sentiment could improve if usage expands and the protection demonstrably benefits execution, but adoption and market conditions remain key uncertainties.