{"slug":"norton-vs-windows-defender","question":"Norton vs Windows Defender","answer":"Windows Defender is built into Windows at no cost with adequate protection for casual users, while Norton offers advanced features like VPN, password manager, and dark web monitoring for $39.99/year but requires additional system resources.","answer_curated":true,"verdict":"Choose Windows Defender if you want zero-cost protection with minimal system impact and primarily use Windows—it provides adequate detection rates for standard browsing and work. Choose Norton if you need advanced security features, VPN access, password management, and are willing to invest $39.99 annually for comprehensive multi-device protection across Windows, Mac, and mobile platforms.","keyDifferences":[{"label":"Annual Cost","winner":"b","entityAValue":"$39.99/year","entityBValue":"Free"},{"label":"Real-World Detection Rate (2024 AV-Comparatives)","winner":"a","entityAValue":"98.5%","entityBValue":"97.2%"},{"label":"System Performance Impact","winner":"b","entityAValue":"9-12% slowdown","entityBValue":"2-4% slowdown"},{"label":"Bonus Features","winner":"a","entityAValue":"VPN, Password Manager, Dark Web Monitoring","entityBValue":"None"},{"label":"Installation Size on Disk","winner":"b","entityAValue":"850 MB","entityBValue":"Included in Windows"}],"winner":{"slug":"windows-defender","name":"Windows Defender"},"confidence":"high","entities":[{"name":"Norton Antivirus Plus","slug":"norton-antivirus-plus","url":"https://www.aversusb.net/entity/norton-antivirus-plus","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/norton-antivirus-plus"},{"name":"Windows Defender","slug":"windows-defender","url":"https://www.aversusb.net/entity/windows-defender","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/windows-defender"}],"faqs":[{"question":"Is Windows Defender good enough in 2026?","answer":"Yes, Windows Defender is sufficient for most users. According to 2024 AV-Comparatives testing, it achieves a 97.2% real-world malware detection rate with minimal false positives. It's best paired with good browsing habits and regular software updates. However, users handling sensitive data or managing multiple devices should consider supplemental tools like Norton."},{"question":"How much does Norton slow down your computer?","answer":"Norton causes approximately 9-12% system slowdown during full system scans, compared to Windows Defender's 2-4% impact. For everyday browsing and file operations, the difference is less noticeable. Norton has improved performance in recent versions, but it remains heavier than the built-in Windows solution."},{"question":"Does Norton's VPN really work?","answer":"Norton's VPN is functional but limited. The base plan includes 500MB per day, which is sufficient for light browsing. Norton's higher-tier plans offer unlimited VPN access. Independent testing shows it provides adequate encryption and privacy, though dedicated VPN providers like ExpressVPN offer more robust features and higher speeds."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/norton-vs-windows-defender","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/norton-vs-windows-defender), Windows Defender is built into Windows at no cost with adequate protection for casual users, while Norton offers advanced features like VPN, password manager, and dark web monitoring for $39.99/year b","dateModified":"2026-06-21T15:55:54.511Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/norton-vs-windows-defender","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/norton-vs-windows-defender","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/norton-vs-windows-defender","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/norton-vs-windows-defender#claimreview","url":"https://www.aversusb.net/compare/norton-vs-windows-defender","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Norton vs Windows Defender","reviewBody":"Windows Defender is built into Windows at no cost with adequate protection for casual users, while Norton offers advanced features like VPN, password manager, and dark web monitoring for $39.99/year but requires additional system resources.","datePublished":"2026-06-21T15:55:54.263Z","dateModified":"2026-06-21T15:55:54.511Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/norton-vs-windows-defender","url":"https://www.aversusb.net/compare/norton-vs-windows-defender","name":"Norton vs Windows Defender","inLanguage":"en-US"}}}