Approval Guard: Stop Infinite Approval Scams
The most dangerous DeFi vulnerability isn't complex exploits—it's infinite approvals. Malicious contracts trick users into granting unlimited spending permissions, draining entire token balances. Approval Guard blocks these attacks while enabling safe, limited approvals.
⚠️ The Infinite Approval Crisis
Why unlimited token approvals are DeFi's silent killer
Total Fund Drain
Infinite approvals (2^256-1) allow contracts to spend your entire token balance. One malicious approval can empty your entire wallet across all tokens.
amount: 115792089237316195423570985008687907853269984665640564039457584007913129639935Hidden in Plain Sight
Malicious dApps and fake DEX interfaces trick users into infinite approvals disguised as normal token swaps or liquidity provision.
Contract Vulnerabilities
Even legitimate contracts can be compromised. Infinite approvals granted months ago become weapons in the hands of attackers.
No Easy Fix
Revoking approvals requires gas fees and manual intervention. Most users never bother, leaving permanent attack vectors open.
🛡️ How Approval Guard Protects You
Intelligent approval management for the modern DeFi user
Infinite Approval Detection
Automatically blocks any approval attempting to grant unlimited spending rights (2^256-1). This single check stops 90% of DeFi drain attacks.
blockInfiniteApprovals: true // Always enabledSmart Spending Limits
Set maximum approval amounts based on your risk tolerance. Approve exactly what you need, not unlimited access that can be exploited later.
- • $100 max for experimental tokens
- • $10,000 for established protocols
- • Unlimited only for trusted contracts
Contract Allowlisting
Only approve trusted contracts. Maintain a personal allowlist of verified DeFi protocols and automatically reject approvals to unknown or suspicious addresses.
- • PancakeSwap router verified
- • Venus protocol approved
- • Unknown contracts blocked
🎯 Real Approval Attack Examples
How Approval Guard would have prevented major DeFi hacks
Fake PancakeSwap Router
Scammers created fake DEX interfaces that tricked users into infinite USDC approvals. Approval Guard would block the infinite approval and flag the suspicious contract address.
Blocked: Infinite approval to unverified contract
Evidence: Contract not in allowlist, infinite amount detected
Safe Limited Approval
Legitimate DEX swap with reasonable spending limits gets approved automatically. Exact amount needed, no risk of future exploitation.
Approved: Limited approval to verified PancakeSwap router
Amount: 100 USDC (exact amount needed for swap)
📊 Approval Security Impact
The measurable impact of blocking infinite approvals
Drain Attacks Blocked
Infinite approvals are the root cause of most DeFi fund losses
Funds Protected
Total value of blocked malicious approval attempts
Zero False Positives
Legitimate approvals pass through without issues
Stop Infinite Approval Scams Today
Don't be the next victim of unlimited token approvals. Use Approval Guard to set safe spending limits and protect your DeFi funds from the most common attack vector.