Multi-Chain Wallet Security: Best Practices for 33+ EVM Chains
May 12, 2025•9 min read
The multi-chain era has arrived. With 33+ EVM chains available, users are spreading their assets across Ethereum, Base, Arbitrum, Polygon, Optimism, Avalanche, and dozens more. But each chain introduces new security considerations.
The Multi-Chain Security Challenge
Each EVM chain has its own:
- Bridge contracts: Cross-chain bridges are prime targets for hackers
- RPC endpoints: Malicious RPCs can modify transactions
- Token standards: Different chains have different token implementations
- Gas mechanics: Gas prices and mechanisms vary by chain
Essential Multi-Chain Security Practices
- Audit approvals per chain: Token approvals are chain-specific. An approval on Ethereum doesn't affect Arbitrum.
- Verify bridge contracts: Always verify bridge contract addresses before bridging.
- Use trusted RPCs: Stick to official RPC endpoints or trusted providers.
- Monitor all chains: A drainer can attack on any chain. Monitor them all.
- Separate wallets: Use different wallets for different risk levels.
How SweepGuard Protects You Across Chains
SweepGuard provides unified security across all 33+ supported chains:
- Single dashboard to monitor all chains
- Cross-chain approval scanning
- Multi-chain drainer detection
- Unified auto-sweep across all chains
- Chain-specific risk scoring