Prefer hardware wallets for high-value assets
Hardware wallets store private keys in a secure, offline element and require physical confirmation for each signing action. For high-value NFT collections, using a hardware wallet dramatically reduces exposure to browser-based threats and malicious extensions.
Review messages before signing
Signed messages can do more than authenticate — they can also grant permissions. Read the signing request and, if the text seems generic or asks for approvals without clear intent, cancel and verify. When in doubt, pause and research the contract address or request.
Maintain a “working wallet” and a “vault wallet”
Consider splitting assets: keep a small balance in a “working” wallet for active trading and keep the majority of high-value NFTs in a separate “vault” wallet with stricter security (hardware, offline seed). This reduces the blast radius if an approval or compromise occurs on the working wallet.
Periodic security hygiene
Regularly update your wallet software, browser, and OS. Revoke stale approvals, audit connected sites, and keep a physical copy of your seed phrase in at least two secure locations. Use unique passwords for any related accounts and enable multi-factor authentication where available for services associated with your wallet (email, exchange accounts, etc.).
Following a structured security approach when connecting to OpenSea will help you enjoy the NFT ecosystem with confidence and minimize the risk of loss.