How to safely navigate crypto products

How to reverse a malicious Seaport Signature.
The transaction where it all happened
Take a careful look at the Etherscan record of the transaction that drained Rose’s wallet.

Step One: Go to the contract

First, you will need to go to the OpenSea Seaport contract on Etherscan/Polygonscan. Click the link to have it open.

Then, click “Connect to Web3” – you’ll find it on the bottom left side of the page.

Step Two: Scroll Down

Then, scroll down to “Increment Counter,” then click “Write,” and sign the signature.

What happens now?
This means that by implementing the new contract, all previous listings have been deleted, including both intended and potentially harmful ones, rendering them unable to be executed.

What are Token Allowances?

Token Allowances enable apps to access/move tokens into your wallet on your behalf.
While allowances are necessary, there are steps users can take to revoke an allowance after they’ve used a product.

Can I just disconnect my wallet?
Disconnecting your wallet from a app does NOT mean you’ve revoked allowances. The app can still execute transactions, which is unsafe.

Revoking Token Allowances

Use Revoke.Cash to revoke any unlimited allowance on Polygon, Arbitrum, or Optimism.


1. Connect Wallet to Revoke

2. Switch Chain to Polygon, Arbitrum, or Optimism

3. Click Revoke (right column)

Difficulty Intermediate

Link quest, get points and NFT:

NFT security practices



It’s important to understand the difference between cold and hot wallets. A cold wallet is offline and not connected to the internet, providing enhanced security. In contrast, a hot wallet is connected to the internet, making it more convenient for frequent transactions.

Wallet delegations, an advanced wallet security concept:

Bankless: Saving NFTs with

Boring Security: Wallet Delegations: Explained

⚙️Следите за новостями в телеграм, (зеркало сайта) -

Donation address:

ETH wallet in👉 Debank and De.Fi WEB3, социальная сеть.

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