Check by CyberDrain

Check is an advanced open source browser extension by CyberDrain that provides real-time protection against Microsoft 365 phishing attacks. Designed for enterprises and managed service providers, Check uses sophisticated detection algorithms to identify and block malicious login pages before credentials can be compromised. The extension integrates seamlessly with existing security workflows, offering centralized management, comprehensive logging, and CIPP integration for MSPs managing multiple Microsoft 365 tenants. Check allows management via Group Policy, Intune Management, or your RMM and is completely brandable for a white label experience. Check out the open source repository for Check at https://github.com/cyberdrain/Check