Introduction to Stelo, a visual cybersecurity tool that allows for the immediate cancellation of suspicious contracts and provides risk alerts before transactions.

The world of blockchain is full of risks, and for users who are not familiar with programming, it is often easy to fall into scams due to momentary negligence. This article introduces two practical tools, "Stelo" and "Approvals," launched by the cybersecurity company Stelo Labs. These tools not only help evaluate risks before transactions but also allow users to constantly assess the health of their wallets and revoke any risky contract authorizations.

Introduction to Stelo Security Tool, Evaluating Risks Before Each Transaction

Stelo Labs is a cybersecurity company supported by the venture capital firm a16z. They have launched a browser extension product called "Stelo" to help users visually assess transaction content and alert them to any risks before confirming any transactions online.

Below is a preview page that Stelo will pop up for users before confirming a transaction, for both Swap and NFT transactions. Users can clearly see details such as transaction amount, NFT, and smart contract information, allowing them to have a better understanding of who they are transacting with and what they are transacting for.

Additionally, if there are any risks associated with a transaction, Stelo will display warning messages and describe the reasons why it is considered risky.

Introducing "Approvals," Stelo's Wallet Security Inspection Tool - What's Your Wallet's Health Score?

Approvals.xyz is a wallet security inspection tool developed by Stelo Labs. Users can simply link their wallets to view their health scores, currently supporting four chains: ETH mainnet, Polygon, Optimism, and Arbitrum one.

If the health score is low, users can check the contract authorization list to identify the issues. Approvals will list out past authorized addresses or protocols for tokens and NFTs one by one.

Using WETH as an example, this wallet has authorized OpenSea to transfer an unlimited amount of WETH, shown with a yellow warning on Approvals, suggesting a consideration for revoking this authorization. By clicking the "purple eye" icon on the right, users can view more detailed authorization content and risk assessment. If revocation is deemed necessary, clicking the "Revoke" button will initiate the revocation process.

Compared to previous websites for authorization revocation, Approvals offers a more user-friendly interface and experience. Besides orderly listing authorization contracts, the provided information is clearer and more readable. Moreover, users can immediately see changes in their wallet's health score after revocation, ensuring their wallet is relatively secure in a simple manner.

Interested readers are encouraged to try it out themselves to prevent their wallets from being at risk. Additionally, feel free to join Telegram to get first-hand introductions to useful blockchain tools.