Smart Contract Security · question
Q.01 of 15
What are the key principles of smart contract security?
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Smart contract security is built on several foundational principles:
- Immutability Awareness: Once deployed, contracts cannot be changed, so security must be built-in from the start
- Deterministic Execution: Contracts must behave predictably under all conditions
- Gas Limitations: Operations must be efficient to avoid out-of-gas errors
- External Dependencies: Minimize trust in external contracts and oracles
- Access Control: Implement proper permission systems
- Input Validation: Validate all external inputs and state changes
- Fail-Safe Defaults: Design systems to fail securely when unexpected conditions occur
These principles ensure contracts operate safely in the adversarial blockchain environment where transactions are irreversible and public.
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