MailGuard Advanced Threat Protection is a cloud-based email and web security solution designed to supplement Microsoft 365's built-in email filtering capabilities. It is deployed as an additional security layer by modifying MX records for email routing and proxy settings for web traffic, requiring no additional hardware, software licensing, or administrative overhead. The solution focuses on intercepting email-borne threats before they reach the recipient's inbox. It targets phishing, spear phishing, malicious code attacks, business email compromise (BEC), ransomware, and spam. Detection is driven by proprietary heuristic algorithms, machine learning (ML), and generative AI, which are used to identify and block fast-breaking and emerging threats. MailGuard operates entirely in the cloud, meaning protection updates are applied globally across all customers in real time without requiring manual patching or software updates. It can be deployed alongside Microsoft 365 and Microsoft Defender within hours. The product is available for trial via a free trial offer, though it is a commercial product.