CypherSeal is a Gmail extension designed to protect small and medium businesses from email fraud, including Business Email Compromise (BEC) and invoice fraud. This Chrome add-on operates entirely within the user's browser, ensuring that sensitive data remains on the device. With a robust 18-layer detection engine, CypherSeal provides real-time analysis of email content, assigning a risk score to alerts about potential fraudulent activities. Users can scan emails directly, and if high-risk content is detected, Safe View shields the email until further review is conducted.

The tool caters specifically to roles such as company secretaries, accountants, and CFOs who frequently manage financial transactions via email. CypherSeal's adaptive intelligence builds a private map of communication patterns, allowing it to flag unusual requests effectively. The free tier offers five scans per day, while the Pro version provides unlimited scans and additional features, making it a valuable asset for businesses looking to bolster their email security without requiring extensive IT resources.