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Smart contract security · 9 min read

A smart-contract security checklist that survives audit

By Mira Okonkwo · Published Jun 18, 2026

Detailed close-up of computer motherboard showing components like RAM slots and capacitors.

Low-severity findings are won before the audit. The teams that sail through review share a habit: they threat-model first, write invariants alongside implementation, and document every tradeoff where an auditor will look for it.

The eight gates

  • Access scoping — every privileged function mapped to a role, with no admin-shaped surprises.
  • Oracle guards — deviation bands, staleness checks and fallback pricing specified in writing.
  • Reentrancy discipline — checks-effects-interactions plus targeted invariant attacks.
  • Upgrade paths — UUPS or immutable by decision, never by accident; storage gaps verified.
  • Gas ceilings — worst-case paths profiled so peak load never bricks a function.
  • Event completeness — every state change observable for indexers and monitors.
  • Pause design — who can pause, what pauses, and the unpause path rehearsed.
  • Deployment ceremony — keys, parameters and verification rehearsed on testnet.

Run this two sprints before you book auditors. You will cut review rounds and keep findings cosmetic — which is exactly where they belong.

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