Trusted Shops extension per Trusted Shops SE

The Trusted Shops browser extension
• is free of charge and installed with one click
• shows shops with the trustmark and money-back guarantee in the search results
• warns you before entering a fake shop

The official Trusted Shops Google Chrome extension shows you which online shops have the Trusted Shops trustmark directly in the search results. These shops offer you the comprehensive money-back guarantee no matter which payment option you've chosen.
In addition, you are actively warned with a pop-up when you enter a shop that Trusted Shops has classified as fraudulent.