SHIELD CryptoGuard — Web3 Antivirus

SHIELD CryptoGuard is a real-time AI security extension built for Web3. Every URL you visit, every smart contract you interact with, and every token approval your wallet is about to sign passes through SHIELD's multi-layer threat detection engine — in under 50 milliseconds — before you confirm anything.
The Web3 threat landscape is unlike anything in traditional cybersecurity. Phishing sites targeting crypto wallets go live in under 6 minutes. Honeypot tokens are deployed, promoted, and drained within a single block. Wallet drainers use gasless off-chain signatures to bypass conventional security tools entirely. SHIELD was designed specifically for this environment.
🛡 WHAT SHIELD PROTECTS YOU FROM
◆ PHISHING & FAKE PROTOCOL SITES
Detects and blocks fake MetaMask, Uniswap, OpenSea, Ledger Live, and 300+ crypto protocol imitations before they load. Domain age, SSL anomalies, and infrastructure fingerprints are evaluated in real time. If a site is on the threat database, it never reaches your screen.
◆ IDN HOMOGRAPH ATTACKS
Attackers register domains using Unicode characters visually identical to Latin letters — uniswap.org spelled with a Cyrillic 'a' looks exactly like the real domain in your browser bar. SHIELD normalizes every domain string and runs similarity scoring to catch these invisible spoofs.
◆ HONEYPOT TOKEN DETECTION
Before you buy any token, SHIELD simulates a sell transaction against the contract bytecode without broadcasting it to the network. If the simulation reverts — because the contract has hidden whitelist modifiers, owner-controlled tax toggles, or dynamic revert conditions that trap buyers — you receive a CRITICAL alert before a single token is purchased.
◆ INFINITE APPROVAL INTERCEPTION
The most common wallet drain vector in DeFi. When any contract requests unlimited spend authorization on your ERC-20 tokens, SHIELD intercepts the approval before your wallet signs, decodes the spender address and amount, and offers you the option to approve only the exact transaction amount required.
◆ PERMIT2 & EIP-712 SIGNATURE PROTECTION
Modern drainer attacks use gasless off-chain signatures specifically because they bypass tools that only monitor on-chain approve() calls. SHIELD decodes every signature request your wallet receives and flags any off-chain authorization granting token spend rights to an unverified address.
◆ NFT SETAPPROVALFORALL INTERCEPTOR
setApprovalForAll grants a contract unrestricted access to your entire NFT collection in a single call. This mechanism is behind the majority of NFT wallet drain events. SHIELD flags every setApprovalForAll request and evaluates the operator address before you confirm.
◆ RUGPULL RISK SCORING
SHIELD analyzes on-chain signals for rugpull mechanics: liquidity lock expiry, admin key concentration, upgradeable proxy patterns without governance timelock, team wallet allocation above 30% with no vesting schedule, and deployer wallet history showing prior flagged token launches.
◆ MALICIOUS AIRDROP DETECTION
Unknown tokens appearing in your wallet with no prior transaction history are flagged automatically. These are typically drainer lures designed to redirect you to a phishing contract when you attempt to sell or claim them.
◆ ADDRESS POISONING ALERTS
Attackers send zero-value dust transactions from vanity addresses matching the first and last characters of addresses in your history. SHIELD detects address similarity patterns and alerts you before any outbound transfer.
◆ AI CONTRACT RISK SCORE (0-100)
Every smart contract receives a composite AI risk score across eight independent threat vectors: source verification, sell simulation, liquidity lock status, admin key renouncement, deployer history, proxy upgrade pattern, team allocation, and cross-chain reputation.
⚡ HOW THE AI ENGINE WORKS
SHIELD runs a 5-layer detection pipeline on every Web3 interaction:
Layer 1 — INGESTION: Extracts domains, contract addresses, and approval parameters locally in your browser. No data leaves your device unless a threat query is required.
Layer 2 — CLASSIFICATION AI: Multi-vector scoring using domain analysis, SSL provenance, bytecode heuristics, and deployer wallet history. Results in under 50ms for cached threats.
Layer 3 — APPROVAL INTERCEPTION: Decodes every token approval and signature request before your wallet signs. Flags infinite spend authorizations and unverified operators.
Layer 4 — CLEAR ALERT: Every threat verdict is delivered in plain language with a severity classification (CRITICAL, HIGH, MEDIUM, INFORMATIONAL) and a specific recommended action.
🔒 PRIVACY
SHIELD never requests, reads, stores, or transmits your private keys or seed phrase. The extension reads URLs and contract addresses only to perform threat analysis. No advertising tracking, no behavioral profiling, no data sold to third parties.
Privacy policy: https://cryptoguard.site/privacy.html

💡 FREE & PRO PLANS
FREE TIER — No account required:

Real-time phishing and domain protection
Basic honeypot detection (5 contract analyses/day)
Infinite approval warnings

PRO SHIELD — $9/month, 7-day free trial:

Unlimited smart contract analyses
Full AI risk scoring (0-100)
Permit2 and EIP-712 signature decoder
setApprovalForAll NFT drain protection
Behavioral heuristic detection for zero-day threats

⚠ DISCLAIMER
SHIELD CryptoGuard is in public beta. It significantly reduces but does not eliminate Web3 risks. Always conduct independent due diligence before signing any transaction.
Developed by Edutech Wise FZCO, United Arab Emirates.
Website: https://cryptoguard.site