EAST (Eye Anti-Spoofing Tool) is a free anti-phishing tool designed for Microsoft 365 environments. It targets credential phishing attacks, where users are tricked into submitting login credentials to fraudulent websites. The tool works by delivering a custom CSS file to the user upon sign-up. This file is then uploaded directly into the Microsoft 365 Entra Portal, applying visual changes intended to help users identify legitimate login pages and avoid falling victim to spoofed ones. Setup Process: 1. User registers with their email address on the Eye Security website. 2. Eye Security emails a custom CSS file along with installation instructions. 3. The user uploads the CSS file into their Microsoft Entra (Azure AD) portal. The tool requires no additional software installation and is deployed entirely through Microsoft 365's built-in customization capabilities in the Entra Portal. It is offered at no cost and is positioned as a lightweight, low-friction measure against credential phishing for organizations using Microsoft 365.