The article discusses how to improve the effectiveness of Windows Defender, the built-in antivirus software in Windows, by enabling additional features such as Microsoft Advanced Protection Service (MAPS) and ransomware protection. It also provides a walkthrough on how to configure these features using the Local Group Policy Editor and PowerShell. The article concludes that while Windows Defender may not be the most comprehensive antivirus solution, it can be sufficient for standard users who practice safe browsing habits. By hardening Windows Defender, users can enhance their device's security without needing to install additional antivirus software.