Frequently Asked Questions
Plain answers about what SHIELD CryptoGuard does today, and what it does not.
SHIELD CryptoGuard is a Chrome extension in public beta, operated by Marbella Collins LLC, a Florida (USA) limited liability company. It does three things: it checks sites for phishing, it warns you about unlimited token approvals, and (PRO) it checks token contracts with GoPlus Security.
On every page you open, SHIELD compares the domain with a list of known phishing domains (a built-in list) and with a list of legitimate crypto sites, to catch look-alike names. If the domain matches, SHIELD shows a warning on the page and a browser notification. Suspicious URL patterns (such as “airdrop” or “claim reward”) appear as MEDIUM risk when you open the SHIELD popup. SHIELD only knows the domains and patterns on these lists.
When a site asks your wallet to approve a very large (unlimited) amount of an ERC-20 token, SHIELD shows a warning on the page and suggests setting a spending limit in your wallet. It does not block the transaction: you decide.
Paste a token contract address into the SHIELD popup. SHIELD asks the GoPlus Security token-security API (Ethereum mainnet) and shows what GoPlus reports: honeypot flag, sell tax above 10% (critical above 49%), hidden or reclaimable ownership, mintable supply, fewer than 50 holders. The result comes from GoPlus; SHIELD does not verify it independently.
Phishing checks and approval warnings work on any website, whatever network your wallet uses. The PRO contract check covers Ethereum mainnet only.
No. SHIELD never asks for, reads or stores private keys or seed phrases. Anything claiming to be SHIELD and asking for your seed phrase is a scam.
Phishing checks run in your browser, against lists built into the extension. With PRO, the contract address you paste is sent to GoPlus Security. If you log in, your email is sent to our server to check your subscription. Details are in our Privacy Policy.
Free: phishing checks, unlimited approval warnings and alerts. PRO ($9/month, 7-day free trial): adds the GoPlus contract check in the popup.
Yes. Cancellation takes effect at the end of the current billing period. If you cancel during the 7-day trial, you are not charged. Questions: contact@cryptoguard.site.
No. SHIELD is in beta. It reduces, but does not eliminate, risk: it only knows the phishing domains on its lists, it only warns about very large approvals, and contract results depend on GoPlus. Always check before you sign.