Microsoft Defender Antivirus uses the cloud and artificial intelligence powered by next-gen machine learning technologies to rapidly deliver protection against new and emerging malware.

This detection, made possible by cloud-based machine learning, defends against multiple types of emerging malware that perform various malicious actions on your PC.

Understand how malware can get on your PC

This detection is designed to catch several types of malicious files, including PDF files, such as those that are used for phishing and other cyberattacks. We enrich this detection algorithm with URL and domain reputation intelligence from Windows Defender SmartScreen and email intel from Office 365 ATP.

Learn how this integration of Microsoft security solutions results in comprehensive protection against phishing and other attacks: Tackling phishing with signal-sharing and machine learning