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This article offers a comprehensive guide on how to conduct a security checkup on your account, covering how to review authorized apps, check delegation settings, and monitor login activity and devices. It also recommends activating two-factor authentication (2FA) and setting up extra password protections to strengthen your account's security.

This article delves into the concept of Account Abstraction (AA) and its importance in the Ethereum protocol. AA is a proposal aimed at allowing specific Contract Accounts (CAs) to programmatically check the validity of new types of AA transactions, decide whether to pay gas fees on their behalf, and effectively initiate their execution without the need for Externally Owned Accounts (EOAs).

Recently, scams in the cryptocurrency space have become rampant, leading to losses of 4.6 billion dollars in 2023 and 500 million dollars already lost in early 2024. Common problems include vulnerabilities in DeFi protocols (like flash loan attacks and oracle manipulation), phishing websites, and fake airdrops. To protect yourself, enhance your security awareness, regularly check and revoke unknown authorizations, use cold wallets for most of your assets, and avoid clicking on unknown links or downloading unfamiliar plugins.

UniLend was exploited due to a vulnerability, leading to the theft of approximately $200K (4% of TVL). The attacker used a flash loan to deposit 60 million USDC, manipulated collateral calculations, and exploited a contract bug in the health check process to inflate collateral value, withdrawing 60 stETH. The flaw stemmed from the faulty implementation of the userBalanceOfToken function. UniLend has since fixed the issue, paused V2 deposits, and offered a bounty to recover the funds. This incident underscores the critical importance of security for DeFi platforms and the need for thorough smart contract audits.

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The contract address is an indispensable part of the blockchain ecosystem. It is not only used for token transactions and smart contract interactions, but also provides users with tools to verify the legitimacy of tokens and transparently trace transaction history. By using blockchain explorers, official channels, and decentralized exchanges, users can effectively find and verify contract addresses to ensure the security and reliability of transactions. In practical operations, users should remain vigilant, regularly check and update saved contract addresses, especially during project upgrades or migrations, and obtain the latest contract address information in a timely manner to protect their digital asset security.

This week, Gate Research's selected airdrop projects include Nordom, Magic Eden, Sandwatch, Namada, and 4EVERLAND. Nordom is accumulating points for future token distribution; Magic Eden has announced the upcoming launch of the ME token airdrop qualification check; Sandwatch has introduced a blockchain-based creative reward program; Namada offers cross-chain privacy trading, with users able to claim mainnet airdrops; and 4EVERLAND will launch a Web3 cloud ecosystem airdrop. These projects offer users diverse early participation opportunities and potential value.

Crust Network is a decentralized storage solution that uses two methods, MPoW and GPoS, to keep your data safe. The network employs sWorker nodes to check storage tasks and offers an IPFS W3Auth gateway and a Decentralized Storage Market (DSM). Important participants include validators, candidates, guarantors, and users, with the CRU token used for transactions and governance. Crust's storage is cheaper than Google Cloud and offers better data privacy, making it ideal for DApps, website hosting, and NFT storage.

Fraud proof is a blockchain-proof system that helps check the validity and accuracy of rollup transactions on Layer-1 blockchain networks like the Ethereum blockchain.

Aave (AAVE) is a decentralized lending platform that uses smart contracts to eliminate traditional financial intermediaries, enabling users to trade directly. Founded by Stani Kulechov in 2017 under the original name ETHLend, Aave later rebranded and became known for its innovative lending products. The platform supports various cryptocurrencies and utilizes Layer 2 solutions for enhanced performance. Aave offers both collateralized loans and flash loans and features a security module designed to safeguard the protocol from losses. The upcoming Aave V4 will introduce a unified liquidity layer, fuzzy-controlled interest rates, and more. Additionally, Aave Network's proposal aims to make the platform an application chain, with features like GHO-based fee systems and Aave V4 integration. Proposals like "TEMP CHECK" and the introduction of the Umbrella security module seek to enhance AAVE tokenomics and improve both capital efficiency and security. Aave's advancements not only drive the growth of DeFi but also inspire other projects to innovate with token economies.