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Solana Programming

Diagrams | Matrices | Thinkers

SVM Program (Smart Contract) Development

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Solana Onboarding​

Context​

Security​

Writing secure smart contracts involves several key practices:

  • Input Validation: Ensuring that all inputs meet expected formats and constraints prevents malicious inputs from compromising the program.
  • Access Control: Implementing strict access controls restricts who can perform certain actions, protecting against unauthorized use.
  • Regular Audits: Conducting regular code audits helps identify and rectify potential vulnerabilities, ensuring the program remains secure.
  • Safe Rust Libraries: Using well-maintained and reviewed libraries ensures that the program relies on secure, reliable code.
  • Avoid Unsafe Code: Minimizing the use of unsafe Rust code helps maintain safety and prevent vulnerabilities.

Understanding and mitigating common vulnerabilities is critical for secure Solana development:

  • Reentrancy Attacks: Reentrancy attacks occur when an external call is made before updating the state. Preventing these attacks involves avoiding state changes after external calls and using the checks-effects-interactions pattern.
  • Integer Overflow/Underflow: These vulnerabilities occur when calculations exceed the maximum or minimum value an integer can hold. Preventing them involves using Rust’s built-in checks or libraries like checked_add.
  • Unchecked External Calls: Always handling the result of external calls ensures that any errors are managed, preventing unexpected behaviors or vulnerabilities.

Testing

Examples​

AI

Frontend​

Resources and concepts for frontend development.

Drawings​

Questions​

Which Solana development decision — Anchor framework adoption, account model design, or program-derived address strategy — has the most impact on program security and upgradeability?

  • At what program complexity level does using Anchor's constraints and macros produce more security value than the abstraction overhead it introduces?
  • How does Solana's account model fundamentally change the security considerations for a developer transitioning from EVM smart contract development?
  • Which Solana-specific attack vector — account confusion, signer verification bypass, or arithmetic overflow — is most commonly introduced by developers familiar with EVM but new to Solana?