Five Common False Positives That Make Solidity Security Scanners Cry Wolf

Automated Solidity security tools frequently generate overwhelming volumes of false positive findings, causing developers to lose trust and potentially miss real vulnerabilities buried in the noise. A developer spent a week manually verifying scanner flags against production protocols including Ember, Euler, Liquity, Arcadia, and Rubicon, finding every single flagged item to be a false positive. The five most common false positive classes include incorrectly flagged access-controlled functions, fee-on-transfer warnings on curated token sets, unchecked return value alerts where a require statement already exists nearby, and reentrancy warnings on governance-configured external calls. Each class has a deterministic, rule-based fix that eliminates the noise without relying on AI, such as checking for existing access modifiers or reading a few lines of surrounding context. The author argues that smarter contextual analysis, rather than naive pattern matching, is essential for security tools to remain useful and trustworthy.