Explore the applications.
Understand the exposure.

What a DeFi wallet connects to

Decentralized finance, or DeFi, describes blockchain-based financial applications such as token exchange, lending, and borrowing. Your wallet is an interface for authorizing activity; the application's contracts determine what happens to assets committed to it.

A wallet being familiar does not make every application it can connect to safe. Review the specific protocol, the assets involved, and the permissions requested for each activity.

Distinguish holding from using

Holding tokens in a self-custody account differs from depositing them into a protocol. Depositing may exchange control for a contract-based claim or position. Understand how withdrawals work, which assets you will receive, and what conditions could prevent an exit.

When borrowing against collateral, a change in asset values or protocol requirements can lead to liquidation. A position that looks adequately funded today may need active monitoring rather than a one-time setup.

Identify the risk layers

• Contract risk: code can behave unexpectedly or contain exploitable faults.
• Asset risk: token prices, pegs, and liquidity can change.
• Oracle risk: a protocol may rely on outside price inputs.
• Access risk: network conditions, interfaces, or bridges can affect your route in and out.
• Permission risk: a signature or spending approval can authorize more than intended.

Audits and other controls are useful information, but they do not eliminate every risk. A displayed rate is not a fixed promise of future returns.

Read before you sign

Navigate through verified official resources, then read the application's descriptions of deposits, withdrawal restrictions, collateral, and fees. If an approval is required, understand the permitted asset, amount, and contract before accepting.

Record the intended transaction in ordinary language: what leaves the wallet, what you receive, and how you expect to reverse or exit the position. If you cannot explain the transaction, pause rather than interpreting a successful simulation as complete assurance.

Build the basics first

Learn the wallet and its recovery method before adding contract interactions. A separate account can help you organize activity, but it is not a guarantee against a compromised device or exposed recovery material.

Read our Ethereum wallet guide for approvals and gas, our security hub for signing habits, and the network fee guide for costs across a sequence of actions.

Official reading

Use these primary sources to check current details before making a decision.

• Ethereum.org — Decentralized finance
• Aave — Frequently asked questions and risks