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Danger signal

Blacklist Mapping

The contract can blacklist any address from selling — a kill-list with no notice period.

Analyzer: Source-Code Analysis
Slug: blacklist_detected

What it means

A `mapping(address => bool) _blacklist` (or equivalent) is checked in every transfer. The owner can add any wallet to the list, instantly freezing its tokens.

Why it matters

Blacklist contracts are rug-by-design. The operator can wait until enough liquidity has accumulated, then blacklist every non-team wallet and dump.

How RektRadar detects it

RektRadar scans the verified Solidity source for blacklist mappings and the bytecode for the corresponding storage layout when the source isn't published.

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Related signals

Owner Not Renounced — The contract still has an owner — nothing prevents a future privileged change. Upgradeable Proxy — The contract is a proxy — its logic can be swapped without users' consent. Proxy Admin Role — An admin role exists and can change the proxy's implementation contract. Beacon Proxy — Multiple contracts share a single upgradeable implementation — one switch rugs all of them. UUPS Proxy — The implementation contract holds its own upgrade logic — accidental brick risk plus rug risk.