Wallets that work as extensions for web browsers are very versatile and provide facilities for logging into websites and Exchanges. Everything is very simple and apparently safe to do. However, some care is needed. So let's see:

When signing a contract in order to validate your login on a particular site, read the contract and review what permissions you will be granting when signing with your Metamask. Some of these permissions may authorize, for example, an improper movement of your assets.

If you are unsure what permissions have been given to contracts that have already been signed, you can revoke the contracts. Each network has a unique service for this purpose. For example, BEP20 - BSC (Binance Smart Chain) which makes available the website https://allowance.beefy.finance/ or ERC20 - Mainnet from Ethereum at https://etherscan.io/tokenapprovalchecker

Another good security practice is to write down your recovery phrase on paper and keep it in a safe place. Never take photos or screenshots of your recovery phrase. Because malicious software may be monitoring your electronic device and get hold of this information without your knowledge.

See that it is much simpler for Hackers to trick you and take control of your assets than actually breaking the encryption that protects them.

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