What is Permit2? - Contract Guide + How to Revoke
A smart contract originally conceived by Uniswap, Permit2 manages the approval of token transfers via gasless signatures.
“De.Fi Safe is a crucial addition to the web3 ecosystem,” said Yida Gao, Founder & Managing General Partner at Shima Capital, a lead investor in De.Fi. “As the first cross-chain decentralized security network, De.Fi is a much needed project for the overall safety of crypto users, and De.Fi Safe takes user safety to the next level by providing personalized risk audits directly from their wallets based on the smart contracts they interact with. That’s groundbreaking!”
1. TL;DR — Key Points
2. Foreword
3. Introduction to the Crypto’s First Antivirus
4. How to Use the De.Fi Scanner on Base Chain
5. Deep diving into the tokens’ security and liquidity analysis
6. How to Use the De.Fi Shield on Base Chain
7. Free Security Bible
The Inventor of Crypto’s First Antivirus, De.Fi, has merged its revolutionary security solutions with the Base Chain, a Layer-2 chain that offers a safe, low-cost, developer-friendly way to build on-chain. Base is an L2 built on OP Stack in collaboration with Optimism. The Launch of De.Fi’s Crypto’s First Antivirus is the result of 2 years of development and comprehensive analysis of more than 12 million smart contract vulnerabilities on more than 1.15 million transactions, and is the most sophisticated and complete security tool for anyone transacting in Web3.
Powered by machine learning algorithms and trained by smart contract auditors over the past two years, De.Fi Antivirus can identify and inform users of potential malicious exploits and vulnerabilities they might be exposed to. De.Fi’s security suite of digital asset management tools is already trusted by researchers at companies like Coingecko, as well as academic institutions such as the University of London, the National University of Singapore, and many others.
The novel Crypto Antivirus suite features innovative security tools, such as the De.Fi Scanner, a multi layer security solution that is capable of performing a comprehensive technical audit and liquidity analysis of any token in just a few seconds. In addition, the De.Fi Shield automatically scans the user’s wallet for high risk tokens and approvals. Shield automatically identifies all high risk tokens and smart contracts that a user has in his wallet and provides a detailed description of the potential risk.
The novel Crypto Antivirus suite features innovative security tools, such as the De.Fi Scanner, a multi layer security solution that is capable of performing a comprehensive technical audit and liquidity analysis of any token in just a few seconds.
In addition, the De.Fi Shield automatically scans the user’s wallet for high risk tokens and approvals. Shield automatically identifies all high risk tokens and smart contracts that a user has in his wallet and provides a detailed description of the potential risk.
The De.Fi Scanner is an easy-to-use tool designed to help users assess the security of smart contracts in the DeFi space.
To use the scanner, simply enter the contract address in the search bar and wait a few minutes for the scan to complete.
Once the scan is complete, the results will be shown in an easy-to-read, user-friendly layout, highlighting any risks associated with the smart contract.
These risks could range from minor issues that can be easily resolved to major security vulnerabilities that could put user funds at risk. By using the De.Fi Scanner, users can quickly and conveniently assess the safety of interacting with a smart contract, enabling them to make informed decisions and stay safe in the fast-paced and ever-changing world of DeFi.
If you are a developer and want to browse the exact smart contract part which causes a certain vulnerability, you can extend the issue warning window and browse its coded part:
You can also browse the results of the comprehensive tokens’ distribution and liquidity analysis on the right side of the De.Fi Scanner!
De.Fi Shield automatically scans the user’s wallet for high risk tokens and approvals. Shield automatically identifies all high risk tokens and smart contracts that a user has in his wallet and provides a detailed description of the potential risk.
The shield is capable of identifying all high-risk tokens / smart contracts that user has under his wallet in just a few seconds after + and providing a detailed description to each risk:
• Shield automatically scans ALL tokens (and approvals) in your wallet;
• And notifies you if there are any high-risk ones!
Test the Shield Now! Never get REKT Again!
Right now we are GIVING AWAY free copies of the Security Bible — the most comprehensive DeFi Security Guide brought to you by the De.Fi Team!
A smart contract originally conceived by Uniswap, Permit2 manages the approval of token transfers via gasless signatures.
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In this blog, we'll walk through what Gnosis token approvals are and how you can audit + revoke them using the free De.Fi Shield tool.
During Q1 2024 ... total losses amounting to $414,875,820 across a range of exploits and security incidents.
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