Microsoft Defender

As of August 2026, my practical shortlist is:

Best antivirus picks

My quick recommendation

• Most people on Windows: use Microsoft Defender + keep Windows/browser updated + use a good ad blocker.
• Best paid upgrade: Bitdefender.
• Best paid suite for families/identity features: Norton 360.
• Best low-bloat paid option: ESET.
• Best free third-party options: Avast or AVG.
• Most-used paid brands in the U.S.: McAfee and Norton. Security.org’s 2025 U.S. survey listed Microsoft Defender, McAfee, and Norton as the top three primary antivirus programs. (security.org)

Important note on Kaspersky

Kaspersky still performs very well in independent tests, but I would not recommend it for U.S. users: the U.S. Department of Commerce prohibited Kaspersky from providing antivirus/cybersecurity products or services in the U.S., with update-related operations required to stop after September 29, 2024. Kaspersky also said it stopped U.S. sales contracts ahead of July 20, 2024. (media.bis.gov)

The landscape of antivirus software has changed significantly. In the past, you absolutely needed third-party software to keep your computer safe. Today, built-in operating system security has gotten so good that the "best" antivirus for most people might actually be the one that is already on their computer.

The top antivirus options that people actually use and trust are categorized below by what they do best:

1. The Best Free Option: Microsoft Defender (Windows Security)

If you are on Windows 10 or 11, you already have Microsoft Defender pre-installed. For years, tech professionals and enthusiasts on forums like Reddit have argued that Microsoft Defender is all most people need.

• Why people use it: It’s 100% free, runs completely in the background without nagging you to buy upgrades, and has incredibly low impact on your computer's performance. In independent laboratory tests (like AV-TEST), it consistently scores near-perfect marks for threat detection.
• Who it’s for: The average user who practices basic "common-sense internet safety" (e.g., not downloading sketchy email attachments or clicking suspicious links).
• Pro-tip: Many users pair Microsoft Defender with a solid ad-blocker extension in their browser (like uBlock Origin) to block malicious ads before they can load.

2. The Best Overall Paid Option: Bitdefender

If you want stronger protection than Microsoft Defender, or if you use macOS, Android, or iOS, Bitdefender is widely considered the gold standard by cybersecurity experts.

• Why people use it: It consistently sweeps the "Best Antivirus" awards from tech publications like TechRadar, PCMag, and Tom's Guide. It provides aggressive, top-tier malware protection and multi-layered ransomware defense without slowing down your computer.
• Features: Includes a built-in secure browser for online banking, a basic password manager, web-attack prevention, and a limited VPN.
• Who it’s for: Users who want maximum, set-and-forget security and are willing to pay a small annual fee for peace of mind.

3. The Best "All-in-One" Suite: Norton 360 (Deluxe)

Norton is one of the oldest names in PC security. While older versions of Norton earned a reputation for slowing down PCs, the modern Norton 360 is an incredibly robust security suite.

• Why people use it: It offers an unmatched list of extra features. If you want a single subscription that handles all aspects of your digital life, Norton is highly effective.
• Features: Excellent malware protection, an unlimited-bandwidth secure VPN, dark web monitoring (to alert you if your passwords leak), a password manager, parental controls, and cloud backup storage.
• Who it’s for: Families and households looking to protect multiple devices (PCs, Macs, and phones) with a single, highly-featured security bundle.

4. The Best "Second Opinion" Scanner: Malwarebytes

Malwarebytes operates a bit differently from traditional antivirus software.

• Why people use it: Traditional antivirus looks for known viruses, but Malwarebytes specializes in hunting down "malware"—annoying adware, browser hijackers, and PUPs (potentially unwanted programs) that sneak past other software.
• The Strategy: Many users do not buy the premium version of Malwarebytes. Instead, they keep the free version installed on their computer. They let Microsoft Defender run 24/7, and then run a manual scan with Malwarebytes once a month (or if their computer starts acting strangely) just to double-check that nothing got through.
• Who it’s for: Anyone who wants a reliable, on-demand cleanup tool to fix a system that is already acting buggy or infected.

5. The Best for Gamers and Power Users: ESET

If you are a gamer or someone who does heavy video editing, programming, or 3D rendering, you know how annoying it is when an antivirus runs a scan and causes your system to lag.

• Why people use it: ESET (specifically ESET NOD32) is legendary for being the most lightweight, unobtrusive, and resource-friendly antivirus on the market. It runs completely silently in the background, uses almost zero RAM or CPU power, and doesn't bombard you with pop-up ads or up-sell notifications.
• Who it’s for: Tech-savvy users, PC gamers, and creators who want professional-grade security without sacrificing system performance.

⚠️ A Note on Kaspersky

For years, Kaspersky was highly recommended as one of the best antivirus software in the world. However, Kaspersky was banned in the United States. US citizens and businesses are legally barred from purchasing or receiving updates from Kaspersky. If you are looking for a reliable, globally compliant solution, you should choose one of the options listed above instead.

Summary: Which one should you choose?

• If you want zero cost and zero hassle: Stick with Microsoft Defender + an ad-blocker.
• If you want the absolute best, most reliable paid security: Buy Bitdefender.
• If you want a full security bundle (VPN, dark web monitoring, cloud backup): Get Norton 360 Deluxe.
• If you suspect your computer is already infected: Download the free version of Malwarebytes to clean it up.

The most consistently recommended antivirus brands for 2026 are Bitdefender, Norton, McAfee, Microsoft Defender, and ESET, with Bitdefender and Norton showing up most often as top picks across major review sites.

If you want the best overall choice for most people, Bitdefender is the strongest recurring recommendation in testing-based roundups. If you want a highly popular, all-in-one paid suite, Norton 360 is also a top choice and is ranked first by several reviewers. For people who prefer to rely on something already built into Windows, Microsoft Defender is widely used and is mentioned among the most-used antivirus programs.

A practical shortlist:

• Bitdefender Antivirus Plus / Total Security — best all-around protection in multiple expert reviews.
• Norton 360 Deluxe / Norton Antivirus Plus — strong protection plus extra security features; often a top overall pick.
• McAfee Plus — common mainstream option, especially for bundled device coverage.
• Microsoft Defender — the default Windows option and one of the most widely used.
• ESET — a solid lightweight option for users who want control and strong detection.

If you want the simplest recommendation:

• Choose Bitdefender for the best overall balance.
• Choose Norton if you want the most feature-rich consumer suite.
• Stick with Microsoft Defender if you want a free, built-in solution and don’t need extras.

If you want, I can also give you a top 3 by use case:

• best for Windows PCs
• best for Mac
• best free antivirus
• best family plan / multi-device

The "best" antivirus depends on your budget, platform, and needs (basic protection vs. a full security suite). Based on independent lab results (AV-Test, AV-Comparatives) and real-world user adoption, here are the top antivirus brands and products people actually use.

🏆 Top Paid Antivirus (Full Security Suites)

1. Bitdefender Total Security / Internet Security

   • Consistently scores at or near the top in independent tests.
   • Excellent malware detection, low system impact, and useful extras (VPN, password manager, parental controls).
   • Great for Windows, Mac, and mobile.
     Best for: Overall, powerful protection without slowing down your PC.

2. Norton 360 (NortonLifeLock)

   • One of the most recognized and widely used names.
   • Very strong protection, plus a reliable VPN, cloud backup, dark web monitoring, and identity theft tools.
   • Now includes AI-powered threat detection.
     Best for: All-in-one security and identity protection.

3. ESET Smart Security / Internet Security

   • Lightweight, fast, and highly customizable.
   • Excellent detection rates and a simple, clean interface.
   • Popular with tech-savvy users and gamers.
     Best for: Low system resource usage and advanced settings.

4. McAfee Total Protection

   • Very widely used, especially because it comes preinstalled on many PCs.
   • Good protection, plus a VPN, password manager, identity theft protection, and multi-device coverage.
   • Often available at steep discounts for the first year.
     Best for: Family/consumer bundles and multi-device households.

5. Kaspersky Premium

   • Historically one of the strongest anti-malware engines, and still very popular globally.
   • Note: Kaspersky is banned for U.S. government use and new U.S. sales as of 2024 due to national security concerns. If you're outside the US or don't mind that context, it remains technically excellent.
     Best for: Advanced threat protection (non-U.S. users).

🆓 Best Free Antivirus

1. Bitdefender Antivirus Free

   • Same core malware engine as the paid version, no ads, minimal features.
   • Huge user base.

2. Avast Free Antivirus

   • One of the most downloaded free antiviruses globally.
   • Good protection, Wi-Fi scanner, and password manager.
   • Downside: Tends to show lots of upsell pop-ups.

3. AVG AntiVirus Free

   • Owned by the same company as Avast.
   • Clean interface, solid protection, easy to use.

4. Microsoft Defender (Built into Windows 10/11)

   • For many people, this is already good enough.
   • It has improved dramatically and regularly passes lab tests.
   • Just keep Windows updated and enable cloud-delivered protection.
     Best for: Basic, no-install protection.

🛡️ Optional Companion Tool

• Malwarebytes Premium
  • Not a replacement for your main antivirus, but excellent as a second-opinion scanner for adware, spyware, and browser hijackers. Many people run it alongside Norton or Bitdefender.

✅ Quick Recommendation

Pro tip: Whatever you pick, avoid installing two full antivirus programs at once — they conflict and slow down your system. Instead, use one main antivirus plus Malwarebytes as an on-demand scanner.

I'll research current expert reviews and popular user choices for the best antivirus software.Next I'll dig into detailed lab results and popularity data for the leading options.Bitdefender, Norton, McAfee, Malwarebytes, and Microsoft Defender stand out as top antivirus options based on independent lab tests (AV-TEST, AV-Comparatives), expert reviews (PCMag, CNET, TechRadar, etc.), and real-world usage data.

What “best” means depends on needs: pure malware protection, low system impact, extra features (VPN, parental controls, identity theft protection), multi-device coverage, free vs. paid, or ease of use. No single product is perfect for everyone, and many top ones score near-perfectly in recent lab tests for protection, performance, and usability.

Most Popular (What People Actually Use)

According to a 2025/2026 Security.org consumer survey of U.S. users:

• Microsoft Defender: ~23% (most used overall; free/built-in).
• McAfee: ~18%.
• Norton: ~13%.
• Malwarebytes: ~9%.
• Avast: ~8%.
• AVG: ~6%.
• Others (Bitdefender ~4%, Kaspersky, etc.) trail.

Free/built-in options have grown in share as they’ve improved. Many users stick with pre-installed software or free tiers. About two-thirds of U.S. adults use antivirus on at least one device.

Top Expert Recommendations

Here’s a breakdown of leading products/brands:

1. Bitdefender (Antivirus Plus or Total Security) — Frequently ranked best overall
   Editors’ Choice from PCMag and tied for best overall (with Malwarebytes) from CNET in 2026 reviews. Excellent real-world and lab protection scores, very low system resource use, fast scans, and strong extra features (web protection, ransomware defense, VPN in higher tiers, parental controls, identity tools). Family plans can cover many devices. Ideal for most people wanting premium protection without slowing the PC.

2. Norton (AntiVirus Plus or 360 Deluxe/with LifeLock) — Best for features and families
   Consistently high lab scores (often perfect or near-perfect across protection/performance/usability). Strong malware detection, robust firewall, cloud backup, VPN, password manager, and excellent parental controls. Multi-device plans (often 5–unlimited or high numbers) and identity theft protection (especially U.S.). Popular and feature-packed; great value with first-year discounts. Slightly higher resource use than Bitdefender in some tests.

3. McAfee (AntiVirus or Total Protection / McAfee+) — Popular multi-device choice
   High usage share, solid lab results, and often unlimited device coverage. Includes web protection, identity monitoring/tools (data broker cleanup in some plans), and other extras. Convenient for households with many devices, though scans can be heavier on resources.

4. Malwarebytes (Premium) — Strong rising option, excellent for malware
   Tied for CNET Editors’ Choice; praised for low resource impact, effective protection (strong lab showings), clean interface, and extras like privacy/dark web monitoring. Historically strong as a complementary anti-malware scanner; now a full real-time antivirus. Good support and solid for users wanting something lightweight and effective. Device limits can be tighter on base plans.

5. Microsoft Defender (Windows Security) — Best free/built-in for most Windows users
   Highly capable, tightly integrated, regularly updated, and scores very well in labs (e.g., strong protection and usability; performance close to top). Sufficient for many people who practice safe browsing, keep Windows updated, and avoid risky downloads. No extra cost or install needed. Add a secondary on-demand scanner (like free Malwarebytes) if desired. Not as feature-rich as paid suites.

Other Strong Contenders People Use or Recommend

• Avast / AVG Free or Premium — Excellent free options with high AV-TEST scores (perfect 6/6/6 in recent rounds). Good detection, extras like browser cleanup or optimization. Free versions are popular and capable; paid unlocks more. Note: Free versions may include ads or upsells.
• ESET NOD32 / Internet Security — Lightweight, high protection scores, good for tech-savvy or performance-focused users. Low impact.
• Others with strong lab results: Kaspersky (excellent technically but check local restrictions/geopolitical concerns in some countries), F-Secure, Trend Micro, G Data.

Quick Buying Advice

• Most people (Windows): Start with Microsoft Defender. Upgrade to Bitdefender or Norton if you want extras, multi-device family coverage, or maximum peace of mind.
• Families/multi-device: Norton or McAfee (check device limits and first-year pricing—often heavily discounted).
• Low impact/lightweight: Bitdefender, Malwarebytes, or ESET.
• Free: Microsoft Defender + optional free Malwarebytes/Avast/AVG scanner.
• Mac/mobile: Built-in protections (XProtect on Mac, Google Play Protect/Samsung Knox on Android, sandboxing on iOS) are strong baselines. Third-party options from the same brands exist but are less critical on Apple devices.
• Look at recent independent tests (AV-TEST, AV-Comparatives), current pricing/deals, device limits, and renewal costs (first year is often cheaper). Read recent user reviews for interface and support.
• Best practices matter more than any single tool: Keep OS/apps updated, use strong unique passwords + 2FA, avoid suspicious downloads/links, and enable firewalls/backups.

Lab leaders rotate slightly test-to-test, but Bitdefender, Norton, McAfee, ESET, Avast/AVG, and Microsoft consistently perform at a high level. Choose based on your devices, budget, and desired extras rather than chasing a single “#1.” Check the latest reviews from PCMag, CNET, or lab sites for the absolute newest scores, as products update frequently.