Windows Security vs. Microsoft Defender: What’s the Difference?

Windows PCs, like their Mac counterparts, are susceptible to cybersecurity threats such as malware, phishing attacks, and other malicious activities. However, Microsoft has embedded several robust tools within the operating system to help users remain secure. Two of the most commonly used are Windows Security and Microsoft Defender. The distinction between the two can be confusing, as Microsoft Defender is a component of Windows Security, yet there are additional features available via a separate, dedicated app. Here’s a detailed breakdown of what each offers.

Availability and Costs: Key Differences

While both Windows Security and Microsoft Defender come pre-installed on all PCs running Windows 10 and Windows 11, only Windows Security is entirely free to use. Microsoft Defender, although integrated into Windows Security, offers premium features such as VPN and identity theft monitoring that require a subscription through Microsoft 365. This app must be installed separately from the Microsoft Store.

In addition, Microsoft Defender is cross-platform, available for download on Android, iOS, and macOS through their respective app stores. However, these premium features are tied to a Microsoft 365 subscription, with pricing starting at $69.99/year for the Personal Plan or $99.99/year for the Family Plan.

Windows Security: A Built-in Layer of Defense

Windows Security is the built-in security suite that offers solid protection against various threats, often comparable to third-party antivirus software. It includes:

• Virus & Threat Protection powered by Microsoft Defender Antivirus offers real-time scanning and protection against malware, ransomware, and potentially unwanted apps (PUAs). Various scanning modes, such as full, quick, and custom scans, allow users to manage their device’s security comprehensively.
• Account Protection ensures the security of user accounts, safeguarding Windows Hello sign-ins, Microsoft accounts, and even enabling Dynamic Lock.
• Firewall & Network Protection is enabled by default and protects both private and public networks. Users can also adjust settings to allow specific apps to bypass the firewall when necessary.
• App & Browser Control strengthens security against untrusted apps and suspicious websites by enabling Reputation-based protection and Exploit protection, which actively monitors and blocks malware exploiting system vulnerabilities.
• Device Security offers deeper insights into the system's hardware-based security, including features like core isolation, secure boot, and TPM (Trusted Platform Module).
• Device Performance & Health provides a snapshot of the system's overall status, such as storage, battery life, and software updates.

Microsoft Defender: Advanced Features for Online Threat Protection

The Microsoft Defender app, while sharing its name with the antivirus feature in Windows Security, serves a different purpose and provides more advanced protection. Designed for personal and enterprise users, it focuses heavily on online threats, offering additional security services such as:

• VPN (Virtual Private Network): Encrypts your internet connection, providing secure browsing on public Wi-Fi. The service comes with a data limit of 50GB per month, after which transfer speeds are throttled.
• Identity Theft Monitoring: This feature continuously scans the dark web for signs that your personal information, such as your Social Security Number, is being used fraudulently. Alerts are sent if any potential risks are detected. The service offers identity recovery support and up to $1 million in restoration costs for victims of identity theft.
• Multi-Device Monitoring: Microsoft Defender allows users to monitor up to four devices, offering a unified dashboard to track potential security risks. It provides timely notifications on suspicious activities and allows for quick mitigation.

Which Should You Use?

Both Windows Security and Microsoft Defender offer essential security features, but the decision of which one to use depends on your specific needs:

• Windows Security is a strong, built-in defense that comes at no additional cost and provides a broad range of protection suitable for everyday users.Microsoft Defender is ideal if you're a Microsoft 365 subscriber or require additional layers of security, such as VPN, identity theft monitoring, or protection across multiple devices.

For most users, Windows Security will suffice for day-to-day protection. However, if you're concerned about advanced online threats and already have a Microsoft 365 subscription, the Microsoft Defender app can be a valuable enhancement to your digital security.