最先進的三明治攻擊目標是四分之一。

分散金融（DEFI）的世界雖然充滿創新和潛力，也是一個戰場，安全脆弱性

In the burgeoning realm of decentralized finance (DeFi), innovation often outpaces security, creating a battleground where vulnerabilities can be ruthlessly exploited. Recently, Four.Meme, a launch platform for memecoins built on the BNB Chain, fell victim to a sophisticated sandwich attack, resulting in an estimated $120,000 loss and the temporary disruption of its operations.

在蓬勃發展的權力金融領域（DEFI）中，創新通常超過安全性，創造了一個戰場，可以無情地利用脆弱性。最近，Four。最碩士是建立在BNB鏈上的Memecoins的發射平台，成為了一場精緻的三明治襲擊的受害者，估計損失了120,000美元，並暫時破壞了其運營。

This incident, meticulously analyzed by web3 security firms ExVul and CertiK, serves as a stark reminder of the ongoing challenges in securing blockchain-based applications.

由Web3安全公司精心分析的這一事件Exvul和certik對此有了明顯的想法，可以提醒您確保基於區塊鏈應用程序的持續挑戰。

Four.Meme, a Rising Star in the Memecoin World

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Four.Meme has emerged as a key platform for launching memecoins on the BNB Chain. Memecoins, fueled by community sentiment and viral marketing, have become a significant part of the cryptocurrency landscape. Platforms like Four.Meme provide the tools and infrastructure for developers and communities to create and launch these tokens.

Four.meme已成為在BNB鏈上啟動Memecoins的關鍵平台。在社區情緒和病毒式營銷的推動下，Memecoin已成為加密貨幣景觀的重要組成部分。諸如Four.meme之類的平台為開發人員和社區提供了創建和啟動這些令牌的工具和基礎架構。

However, the rapid pace of development and the often experimental nature of memecoins can also introduce security risks. Platforms like Four.Meme must remain vigilant in order to protect their users from malicious actors.

但是，發展的迅速速度和經常的成熟性質也可以引入安全風險。諸如Four.meme之類的平台必須保持警惕，以保護其用戶免受惡意演員的侵害。

The Sandwich Attack: A Malicious Tactic

三明治攻擊：惡意戰術

The exploit that targeted Four.Meme was identified as a sandwich attack, a market manipulation tactic that exploits the mechanics of decentralized exchanges (DEXs). In essence, a malicious actor places buy and sell orders around a victim’s transaction, effectively “sandwiching” it.

針對四分之一的漏洞被確定為三明治攻擊，這是一種利用分散交易所（DEX）機制的市場操縱策略。從本質上講，惡意演員認為圍繞受害者的交易買賣訂單，實際上將其“夾住”。

As explained by ExVul, the attacker used the FlashBot to perform the sandwich attack. The attacker would sell a large amount of tokens to decrease the price, followed by buying a large amount of tokens to increase the price. After sandwiching the user's trades, the attacker would quickly withdraw their liquidity, aiming to maximize profit from the price movements.

正如Exvul所解釋的那樣，攻擊者使用Flashbot執行三明治攻擊。攻擊者將出售大量令牌以降低價格，然後購買大量令牌以提高價格。將用戶的交易夾在夾雜物後，攻擊者將迅速撤回其流動性，旨在最大程度地利用價格變動中的利潤。

The attack was spotted by CertiK, which reported observing "a malicious actor attempting to exploit a new launch platform on BNB Chain with an updated sandwich attack strategy."

這次襲擊是由Certik發現的，該襲擊事件報導了“試圖通過更新的三明治攻擊策略來利用BNB鏈上新的發射平台的惡意演員”。

The attack exploited a vulnerability in the platform's launch function, leading to the loss of approximately $120,000 in cryptocurrency funds. Following the incident, Four.Meme quickly suspended its launch function and notified users about the scam via Telegram.

這次攻擊利用了該平台的啟動功能中的漏洞，導致損失約12萬美元的加密貨幣基金。事件發生後，FOR。Meme迅速暫停其啟動功能，並通過電報通知用戶有關騙局的通知。

The platform's response to the incident has been swift and transparent, highlighting the importance of community feedback and cooperation in mitigating such attacks.

該平台對該事件的反應是迅速而透明的，強調了社區反饋與合作在緩解此類攻擊方面的重要性。

DeFi platforms, despite offering numerous advantages, are still susceptible to new types of attacks as the ecosystem evolves. In this case, the attackers were able to capitalize on a known vulnerability and execute their exploit successfully.

儘管提供了許多優勢，但Defi平台仍然容易受到生態系統發展的新型攻擊的影響。在這種情況下，攻擊者能夠利用已知漏洞並成功執行其剝削。

The crypto community can contribute by reporting any suspicious activity and remaining vigilant in identifying and reporting security vulnerabilities. Active participation in security audits, bug bounty programs, and community forums can help to improve the overall security of the DeFi ecosystem.

加密社區可以通過舉報任何可疑活動並保持警惕，以識別和報告安全漏洞來做出貢獻。積極參與安全審核，漏洞賞金計劃和社區論壇可以幫助改善Defi生態系統的整體安全性。