Aptos launches optional Encrypted Mempool to hide pending transactions from MEV bots
Aptos put an opt-in Encrypted Mempool on mainnet that keeps transaction details encrypted until validators finalize block ordering, aimed at MEV bots.
Why it matters
Crypto.News recorded APT falling more than 11% over 24 hours around the announcement, though no outlet in the set connects the two. The feature is opt-in, so how much traffic it actually hides depends on wallet and app support, which Aptos says it built for institutions, traders, AI agents and builders.
Where the sources disagree
The date Aptos announced the Encrypted Mempool launch
Monday
Cointelegraph
October 12
Crypto.News
Cointelegraph dates Aptos's announcement to Monday, while Crypto.News says Aptos confirmed the October 12 launch.
Key facts
Aptos put the optional Encrypted Mempool feature live on its mainnet.
Reported by Cointelegraph
Transaction details stay encrypted until validators finalize block ordering.
Reported by Cointelegraph
Sender addresses and network fees remain publicly visible while transactions are encrypted.
Reported by Crypto.News
Aptos said the feature was built for institutions submitting large transactions, traders wanting to avoid MEV risk, AI agents and builders.
Reported by Cointelegraph
Cointelegraph's analysis of EigenPhi data put the cost of sandwich attacks to Ethereum traders at about $60 million over the 12 months through October 2025.
60,000,000 USDReported by Cointelegraph
Bitquery identified Solana sandwich attacks that generated $29.7 million for bots over an 11-month period, with nearly 6.9 million attacks affecting about 2.2 million wallets.
29,700,000 USDReported by Cointelegraph
Crypto.News reported the native APT token fell more than 11% over 24 hours around the launch.
11 %Reported by Crypto.News
Users enable the encryption individually rather than by default.
Reported by Cointelegraph
What happened
Aptos said on Monday that its optional Encrypted Mempool feature is live on mainnet, letting users keep pending transactions encrypted until block ordering is finalized, Cointelegraph reported. Crypto.News, which says Aptos confirmed the October 12 launch, adds that sender addresses and network fees stay publicly visible while payloads are encrypted, and that validators collectively decrypt a block's contents once it is finalized. Aptos said the feature was built for institutions submitting large transactions, traders who want to avoid MEV risk, AI agents and builders. Cointelegraph, citing its own analysis of EigenPhi data, put sandwich-attack losses to Ethereum traders at about $60 million over the 12 months through October 2025. Both outlets cite Bitquery for Solana, where sandwich attacks generated $29.7 million for bots over an 11-month period covering nearly 6.9 million attacks on about 2.2 million wallets. Crypto.News reported the native APT token down more than 11% over 24 hours while the launch was being announced.
How the story developed
- First report
First report by Cointelegraph
Aptos rolls out Encrypted Mempool to curb frontrunning, sandwich attacks
- Update
Aptos says Encrypted Mempool is live on mainnet
Cointelegraph reported that Aptos announced the optional feature on Monday, letting users opt in to keep pending transactions encrypted until block ordering is finalized.
- Update
EigenPhi data on Ethereum sandwich attacks cited
Cointelegraph put losses to Ethereum traders at about $60 million over the 12 months through October 2025, alongside Bitquery figures for Solana.
- Independent corroboration
Independently corroborated by Crypto.News
Aptos launches Encrypted Mempool: How does it work?
- Update
Aptos confirmed the October 12 launch, according to Crypto.News
The report says encryption is activated per user, addresses and fees stay visible, and the native APT token fell more than 11% over 24 hours.
- Update
Aggregated roundup recaps the feature and the MEV backdrop
Describes the Encrypted Mempool as a transaction privacy layer that removes the information bots rely on to time frontrunning and sandwich attacks.
How coverage built up
Independent sources over time, counted the way the consensus panel counts them: a republication of a wire story does not move the line.
- 13 Oct 2026, 00:52 UTC: Cointelegraph — 1 independent source, 1 reports
- 13 Oct 2026, 05:07 UTC: Crypto.News — 2 independent sources, 2 reports
Affected entities
Original sources
| Publisher | Report | Role | Published |
|---|---|---|---|
| Cointelegraph Crypto media | Aptos rolls out Encrypted Mempool to curb frontrunning, sandwich attacks | Original | |
| Crypto.News Crypto media | Aptos launches Encrypted Mempool: How does it work? | Independent | |
| Bitcoin Insider Aggregator | Aptos Launches Encrypted Mempool to Fight Frontrunning and Sandwich Attacks | Aggregated |
Related events
Blockchain.News publishes technical analyses showing MACD histogram at zero across multiple crypto assets
Blockchain.News released a series of technical analysis articles from October 11-20 showing SUI, APT, NEAR, BTC, and QQQ all trading below short-term moving averages with MACD histograms at zero.
Crypto Token Unlocks Near $1.14B With Aptos and Pump Facing Supply Tests
Crypto projects face $1.139 billion in token unlocks over 30 days, with Pump's $38.17M near-term release dwarfing Aptos's $9.48M unlock.
Ripple and Six Major Blockchains Submit Comment Letters Supporting SEC Crypto Regulation Proposal
Ripple and six blockchain organizations filed comment letters supporting the SEC's proposed Regulation Crypto Assets while requesting specific changes before the October 20 deadline.
Aptos Token Slides Below $0.80 as Double-Top Risk Persists and Vesting Unlocks Taper
Aptos (APT) fell below $0.80 on Oct. 14 after failing to clear the $0.885–$0.893 resistance band, with bearish technical signals and declining token unlocks shaping the outlook.
NEAR Price Prediction: Down 3%, Parked at Pivot — Stochastic Oversold, MAs Still Pressing Down
BNB rally runs ahead of spot volume and open interest in a chart-only review
Blockchain.News, the only outlet covering this, reports BNB rose 3.85% to $755.22 while Binance spot volume stayed modest and BNB futures open interest fell 3.86%.