# Сопутствующие статьи по теме Drainage

Gas Fees and Transaction Security: Avoiding Asset Drainage by Malicious Contracts

Blockchain transactions require gas fee as fuel, but malicious actors exploit this mechanism to drain assets through deceptive practices. Common traps include: 1) Unlimited token approvals, where users grant open-ended access to smart contracts, enabling unauthorized transfers; 2) Gas fee hijacking, where attackers manipulate transaction parameters or embed infinite loops to force excessive gas payments; 3) Fake approvals/transactions via phishing sites that mimic legitimate dApps to steal assets. Key preventive measures: - Apply minimal approval principles, authorizing only necessary token amounts and revoking unused permissions. - Manually set gas limits and prices using wallet advanced settings, avoiding defaults during high network congestion. - Verify contract addresses, transaction details, and DApp authenticity before confirming any transaction. - Use separate wallets for daily interactions and large holdings to isolate risks. If compromised: - Immediately freeze the wallet and revoke all suspicious approvals. - Preserve evidence (TxID, contract addresses) and report to platforms. - Seek professional assistance for large losses—avoid paying "recovery fees" (common secondary scams). Recommended tools: Approval checkers (e.g., Revoke.cash), block explorers (Etherscan), and real-time alert systems. Stay vigilant by scrutinizing every transaction and rejecting unsolicited links.

marsbit02/28 14:34