Revoke Token - 在危險的加密貨幣市場中保護您的資產的工具

Web3 和 DeFi 市場總是充滿危險，即使是老手也會犯下下載入史冊的駭客錯誤。

The Web3 and DeFi markets are always full of dangers that even veterans make mistakes with historical hacks, losing all their assets with just a few clicks, and gaining knowledge is one of the ways to prevent themself to protect their own assets in this market. Revoke token will be a tool to help protect your assets from the most dangerous and powerful hackers. Let's find out about this tool with Allinstation!

Web3 和 DeFi 市場總是充滿危險，即使是老手也會因歷史駭客攻擊而犯錯誤，只需點擊幾下就失去所有資產，而獲取知識是防止自己在這個市場保護自己資產的方法之一。撤銷代幣將成為幫助保護您的資產免受最危險和最強大的駭客攻擊的工具。讓我們透過 Allinstation 來了解這個工具吧！

What is Revoke Token?

什麼是撤銷令牌？

Revoke is the act of withdrawing or canceling the rights that the user has granted to the smart contract to sign transactions, access and interact with assets in the crypto wallet. When performing an action on a decentralized financial application (dApp) such as lending, farming, swap token, the user needs to authorize the smart contract. After the transaction is completed, the user can revoke to cancel the dApp's access rights, ensuring that the applications cannot use the assets without permission.

撤銷是撤回或取消用戶授予智能合約的簽署交易、存取加密錢包中的資產並與之互動的權利的行為。當對去中心化金融應用程式（dApp）執行操作（例如借貸、農業、交換代幣）時，用戶需要對智慧合約進行授權。交易完成後，使用者可以撤銷取消dApp的存取權限，確保應用程式無法未經許可使用資產。

The development process and purpose of Revoke Token?

Revoke Token的開發流程與目的？

Paul Berg was the first to recognize the importance of Revoke and described how to do it at Devcon 5. Later, Zapper.fi, Curve.fi, and Uniswap came up with alternative solutions, but they still had many problems such as high costs and limited number of blockchains. Finally, dedicated tools for Revoke like Unrekt, Revoke.cash and Cointool were born.

Paul Berg 是第一個認識到Revoke 重要性的人，並在Devcon 5 上描述瞭如何做到這一點。低等諸多問題。最後，Unrekt、Revoke.cash 和 Cointool 等 Revoke 專用工具誕生了。

Revoke has three main purposes:

撤銷有三個主要目的：

Why do we need to perform Revoke Token?

為什麼我們需要執行Revoke Token？

Revoke is an important security measure to prevent unauthorized access to users' cryptocurrency assets and minimize security risks. According to the SlowMist Hacked report, in the first half of 2022, the crypto market experienced 187 security incidents, causing losses of 1.976 billion USD, mainly due to buggy smart contracts or attacks by hackers. Here are three important reasons to perform Revoke:

撤銷是防止未經授權存取使用者加密貨幣資產、最大程度降低安全風險的重要安全措施。據慢霧駭客報告顯示，2022 年上半年，加密貨幣市場發生了 187 起安全事件，造成了 19.76 億美元的損失，主要是由於智慧合約缺陷或駭客攻擊造成的。以下是執行撤銷的三個重要原因：

Minimize security risks

最大限度地降低安全風險

Protect privacy rights

保護隱私權

Control assets

控制資產

An example of the risk of not Revoking

不撤銷風險的範例

In October 2020, John Doe saw a dApp called UniCats. After depositing UNI and approving the request “Allow this Dapp to spend your UNI” from Metamask, he farmed $MEOW and thought he had earned enough. However, UniCats is a scam website and John's Allow action gave UniCats full access to his UNI, resulting in a total loss of 36K UNI (1 million USD) while he was sleeping. If John had known about Revoke sooner, this loss could have been avoided.

2020 年 10 月，John Doe 看到了一個名為 UniCats 的 dApp。在存入 UNI 並批准 Metamask 的「允許這個 Dapp 花費你的 UNI」的請求後，他種植了 $MEOW，並認為他已經賺到了足夠的錢。然而，UniCats 是一個詐騙網站，John 的「允許」操作使 UniCats 能夠完全訪問他的 UNI，導致他在睡覺時總共損失了 36K UNI（100 萬美元）。如果約翰早點知道撤銷的事，這種損失本來是可以避免的。

What is Token Approval?

什麼是令牌批准？

Token Approval is the right that users grant to DApps so that they can access the tokens in the user's crypto wallet. DApps use smart contracts to perform transactions on the blockchain, and users can only spend tokens through these contracts once they have granted them permission.

通證批准是用戶授予DApp的權利，以便他們可以存取用戶錢包中的通證。 DApp 使用智能合約在區塊鏈上執行交易，用戶只有在獲得許可後才能透過這些合約花費代幣。

Important note:

重要提示：

When did Token Approval get noticed?

令牌批准何時引起注意？

The cryptocurrency and DeFi markets are developing rapidly along with investment and employment opportunities. However, the risks of losing money, fraud and scams are also increasing. Each time they participate in depositing money on a dApp, users must set the allowance for the exact amount of money that the dApp can access. Some applications request an unlimited allowance (no limit on the amount of money allowed), and when approved, the user only needs to approve it once. Setting up the said unlimited allowance will be less risky when everyone fully understands the dApp being used, or it has been verified. If encountering unverified applications, everyone has only heard about them for the first time, then this is not the right choice. However, this setting can lead to risks if the system encounters a bug or the dApp is hacked.

加密貨幣和 DeFi 市場隨著投資和就業機會的成長而迅速發展。然而，損失金錢、詐欺和騙局的風險也在增加。每次在 dApp 上存錢時，用戶都必須設定 dApp 可以存取的確切資金的限額。有些應用程式要求無限制（允許的金額沒有限制），並且在批准後，用戶只需批准一次。當每個人都充分了解正在使用的 dApp 或已經過驗證時，設定上述無限限額的風險會較小。如果遇到未經驗證的應用程序，大家都只是第一次聽說，那麼這不是正確的選擇。但是，如果系統遇到錯誤或 dApp 被駭客攻擊，此設定可能會帶來風險。

Popular Revoke Token tools

流行的撤銷令牌工具

A guide to using Revoke Token with the Metamask wallet

將 Revoke Token 與 Metamask 錢包一起使用的指南

Instructions on how to Revoke directly on the Ethereum Blockchain

有關如何直接在以太坊區塊鏈上撤銷的說明

Step 1: Visit https://etherscan.io/tokenapprovalchecker and connect your wallet

步驟1：造訪https://etherscan.io/tokenapprovalchecker並連接您的錢包

Step 2: Select the Token standard you want to revoke, here we will have ERC-20, ERC-721, ERC-1155

步驟2：選擇您要撤銷的Token標準，這裡有ERC-20、ERC-721、ERC-1155

Step 3: Click revoke and sign to confirm the action on the wallet

第三步：點擊撤銷並簽名以確認錢包上的操作

Some questions related to Revoke

關於撤銷的一些問題

Does Revoke affect DeFi activities?

撤銷會影響 DeFi 活動嗎？

No! Revoke does not affect any of the user's DeFi strategies but is only an action to minimize the risks coming from the Dapp that the user is using.

不！撤銷不會影響用戶的任何 DeFi 策略，只是為了最大限度地降低用戶正在使用的 Dapp 帶來的風險而採取的行動。

Is Disconnect necessary to revoke the token anymore?

是否需要斷開連線才能撤銷令牌？

Disconnect only cancels the permission for dApp to view the wallet address and asset balance, not protecting assets like Revoke. The answer here is that you still need to revoke

Disconnect只是取消dApp查看錢包位址和資產餘額的權限，並不能像Revoke一樣保護資產。這裡的答案是你仍然需要撤銷

Do Token Approval rights expire automatically?

令牌批准權會自動過期嗎？

No! Token Approval rights work permanently unless the user performs a Revoke

不！除非使用者執行撤銷，否則令牌批准權限將永久有效

In conclusion

綜上所述

Revoke token is one of the activities that any user must know when starting to enter the DeFi world. Keeping your assets safe is a top priority to avoid any unfortunate losses due to scam dApps or being

撤銷代幣是任何用戶在開始進入 DeFi 世界時必須了解的活動之一。確保您的資產安全是首要任務，以避免因詐騙 dApp 或被盜而造成任何不幸損失