which antivirus should I use today?

If you mean for a typical Windows 11 PC today, the short answer is:

• Microsoft Defender — a very good choice if you want free, built-in protection with no subscription. In AV-TEST’s June 2026 testing, Defender scored 6/6 for protection, 5.5/6 for performance, and 6/6 for usability.
• Bitdefender Total Security — a strong option if you want paid protection with additional security features. It scored 6/6 across protection, performance, and usability in the same AV-TEST test, and achieved a 99.5% protection rate in AV-Comparatives’ Feb–May 2026 real-world test.
• Norton 360 — worth considering if you specifically want an antivirus suite with extras such as VPN/identity and family features. It also received 6/6/6 from AV-TEST in June 2026.

My practical advice: if you're on Windows 11 and don't have a specific need for extras, just use Microsoft Defender. You don't need to install a third-party antivirus merely for basic malware protection.

If you tell me Windows/Mac/Android/iPhone and whether you want free or paid, I can narrow it down to the most appropriate options.

Choosing the right antivirus depends heavily on whether you want a zero-cost built-in shield, a lightweight background guardian, or an all-in-one security suite. Independent testing labs like AV-Comparatives and editorial guides from PCMag consistently point to a few standout options:

• Microsoft Defender: Best for most casual users. It comes built right into Windows, requires zero setup, and has evolved into a robust, high-scoring defender that doesn't bog down your system.
• Bitdefender Antivirus Plus: Best overall for lightweight protection. It consistently scores near-perfect marks in malware and ransomware blocking from PCMag while having a remarkably minimal impact on system performance.
• Norton AntiVirus Plus / 360: Best for heavy offline and multi-device defense. Norton boasts exceptional offline detection rates (crucial if you use a laptop without steady Wi-Fi) alongside handy extras like smart cloud backups and password management.
• Malwarebytes Premium: Best as a secondary on-demand scanner or specialized cleaner if you frequently run into aggressive adware or stubborn PUPs (potentially unwanted programs).

To help narrow it down, tell me:

• What operating system are you protecting (Windows, Mac, Android, iOS)?
• Do you prefer a free option or are you open to a paid suite?
• Are you looking for extra features like a VPN or password manager?

If you’re on Windows 11, my recommendation today is surprisingly simple:

🥇 Best for most people: Microsoft Defender

I’d stick with the built-in Microsoft Defender rather than paying for a separate antivirus. In AV-TEST’s latest May–June 2026 testing, Defender scored 6/6 for protection, 5.5/6 for performance, and 6/6 for usability.

It also scored a perfect 18/18 in the February 2026 test.

🥈 If you want a paid antivirus: Bitdefender

Bitdefender is my pick if you specifically want additional features beyond Defender. Bitdefender Total Security scored 6/6/6 in both the February and June 2026 AV-TEST results.

My quick ranking

• Free + excellent: Microsoft Defender
• Paid + excellent: Bitdefender Total Security
• Power users: ESET Security Ultimate
• Mac: Different recommendation—macOS changes the equation.
• Android/iPhone: Different again; traditional antivirus isn't necessarily what you need.

Bottom line: Unless you have a particular reason to want extra security features, don't pay for antivirus in 2026—use Microsoft Defender, keep Windows updated, and enable its ransomware/web protections.

If you tell me Windows, Mac, Android, or iPhone, I can give you the best choice for that specific device.

For most users today, the best choice depends on whether you want a completely hands-off built-in solution or top-tier independent protection. Independent testing labs like AV-TEST and AV-Comparatives consistently rate the top options as follows:

• The Built-In Default: Microsoft Defender (built into Windows). It is entirely free, lightweight, and scores very high in everyday malware protection. If you practice safe browsing habits, it is often all you need.
• The Best Overall & Free Option: Bitdefender. Bitdefender Free offers phenomenal detection rates without aggressive pop-ups or heavy system drag. Its paid tiers add advanced ransomware rollback and extra utilities.
• The Power User / Value Favorite: Kaspersky . Consistently ranks at the absolute top of independent lab tests for zero-day threat prevention and minimal performance impact, though availability and regional considerations vary.
• The On-Demand Backup: Malwarebytes . Excellent for secondary behavioral scanning and cleaning up stubborn adware or PUPs (potentially unwanted programs), though many use it alongside Defender rather than as a permanent heavy background suite.

To help narrow it down, tell me:

• What operating system are you using (Windows, Mac, Android, etc.)?
• Do you prefer a free option or are you willing to pay for a full security suite?

If you're on Windows 11, my recommendation today is:

1. Best for most people: Microsoft Defender — keep the built-in antivirus and save your money. In AV-TEST's June 2026 testing, Defender scored 6/6 protection, 5.5/6 performance, and 6/6 usability.
2. Best paid choice: Bitdefender Total Security — excellent protection with a strong performance record. It scored 18/18 in AV-TEST's June 2026 test, and 99.5% in AV-Comparatives' February–May 2026 real-world test.
3. Good alternative: ESET — particularly attractive if you want more control and security features without a lot of bloat. It scored 18/18 in AV-TEST's June 2026 test.

My pick

Don't install a third-party antivirus unless you have a reason to. For ordinary browsing, shopping, email, gaming, and work, Microsoft Defender + Windows Security + automatic Windows updates is a very solid setup. Independent testing currently puts it among the strongest options.

If you tell me whether you're using Windows, Mac, Android, or iPhone, and whether you want free or paid, I can give you one specific recommendation.

For most everyday users running Windows 11 or Windows 10, the short answer is: you might not need to install anything new at all.

The security landscape has evolved, and the right choice depends on your specific needs and budget:

• The Built-In Default (Free & Adequate): Microsoft Defender Antivirus is already running on your PC. In independent tests by AV-TEST , it routinely scores top marks (6/6) for protection, performance, and usability. If you practice safe browsing habits, don't download shady files, and keep your system updated, it is entirely sufficient.
• The Best Free Third-Party Option: If you want an extra layer of detection without paying a dime or dealing with intrusive upsells, grab Bitdefender Free . It handles heavy-duty threat blocking quietly in the background without dragging down your system speed.
• The Best All-Round Paid Suite: If you want robust anti-ransomware rollback features, banking protection, and bundled privacy tools, Bitdefender Total Security or Kaspersky Standard consistently lead independent lab evaluations for detection and minimal performance impact.
• The Best for Value + Extras: Surfshark Antivirus or Avast One are great choices if you want a top-tier VPN and system cleanup tools bundled directly with your malware defense.

To help narrow this down, tell me:

• What operating system are you using (Windows, Mac, Android, iOS)?
• Are you looking for a completely free option or willing to pay for a security suite?

If you mean for a typical Windows 11 PC today, my recommendation is:

🥇 Best overall: Microsoft Defender

You probably don't need to install anything. Microsoft Defender is built into Windows 11, and in AV-TEST's latest June 2026 testing it scored 6/6 for protection, 5.5/6 for performance, and 6/6 for usability.

🥈 Best paid alternative: Bitdefender

Bitdefender is my pick if you specifically want a paid antivirus with additional security features. It scored a perfect 18/18 in AV-TEST's April 2026 Windows 11 test.

🆓 Good free alternatives

• Avast Free Antivirus — 18/18 in the April 2026 AV-TEST test.
• AVG Antivirus Free — also 18/18.
• Microsoft Defender — essentially the easiest choice because it's already there.

My bottom line: If you're on Windows 11, stick with Microsoft Defender unless you have a specific reason to want a third-party security suite. Modern Defender is much better than its old reputation suggests, and independent testing shows excellent protection.

If you tell me whether you're on Windows, Mac, iPhone, or Android, I can give you the best choice for that device.

The right antivirus choice today depends entirely on your operating system and how heavily you rely on extra tools like a VPN or password manager. For most everyday users, the built-in default protection combined with a top-tier third-party option covers all bases:

• The Built-in Free Option (Windows/Mac): Microsoft Defender (pre-installed on Windows) is genuinely fantastic and scores high marks in independent lab tests. If your browsing habits are safe and cautious, the default protection is often enough.
• Best Overall Paid Protection: Bitdefender Antivirus Plus consistently wins top industry awards for flawless malware/phishing detection, a tiny system footprint, and extra features like a secure banking browser without being bloated.
• Best for All-in-One Suites (VPN + Identity): Norton 360 Deluxe or Avast One are ideal if you want a complete lifestyle package that bundles dark web monitoring, generous cloud backup, and a dependable VPN.
• Best Lightweight / Secondary Scanner: Malwarebytes Premium is great for real-time remediation and catching aggressive adware or browser-hijacking threats that slip past standard shields.

To help narrow down the best fit, tell me:

• What operating system are you using (Windows, Mac, Android, iOS)?
• Do you want a free solution or are you open to a paid suite?
• Are you looking for just malware protection or do you need extras like a VPN?

If you mean for a typical personal computer today (September 2026), my recommendation is:

• Best free option: Microsoft Defender — If you're on Windows 11, you probably don't need to install anything extra. In AV-TEST's latest June 2026 results, Defender scored 6/6 for protection, 5.5/6 for performance, and 6/6 for usability.
• Best paid overall: Bitdefender Total Security — Excellent protection with relatively little performance impact. It received 18/18 in AV-TEST's April 2026 test.
• Best paid for lots of extra features: Norton 360 Deluxe — Particularly good if you want things like VPN, identity/scam protection and parental controls alongside antivirus. Recent testing also rates it very highly.
• Best free alternative: Avast One — Strong protection and a good free tier; it also scored 18/18 in AV-TEST's April 2026 testing.

My simple pick

Windows 11 + don't want to pay → Microsoft Defender. Windows/Mac + willing to pay → Bitdefender Total Security.

I generally wouldn't install two antivirus programs simultaneously—they can interfere with each other and aren't going to give you twice the protection.

If you tell me whether you're using Windows, Mac, iPhone, or Android, I can give you the best specific choice (including whether it's worth paying for).

For the vast majority of users today, the short answer is: You don’t need to buy a separate, third-party antivirus anymore .

The built-in security in modern operating systems is exceptional, and the community consensus heavily leans toward letting built-in tools do the heavy lifting. Here is how to decide what is right for your setup:

1. The Best Default Choice: Microsoft Defender (Windows) / Built-in Apple Security (Mac)

• Who it’s for: 90% of everyday users (browsing, gaming, office work, streaming).
• Why use it: Microsoft Defender (built into Windows 10 and 11) is entirely free, lightweight, doesn't bombard you with pop-ups or upsells, and scores near the top in independent testing labs like AV-Test and AV-Comparatives. macOS has robust native defenses (Gatekeeper, XProtect) that handle Mac threats safely without third-party bloatware.
• The Catch: It relies heavily on your own safe browsing habits ("user common sense").

2. The Best On-Demand Backup: Malwarebytes (Free Version)

• Who it’s for: People who want a safety net for occasional manual scans.
• Why use it: If you suspect you downloaded a dodgy file or want a second opinion, you can download Malwarebytes , run a manual scan to clean up adware or stubborn malware, and close it. You don't need to pay for the continuous real-time background protection unless you are prone to clicking high-risk links.

3. The Best Paid Suites (If you want extra layers)

If you manage high-value financial data, have kids on shared computers, or simply want heavy-duty automated protection and an included VPN, independent tests rank these options at the top:

• Bitdefender Antivirus Plus / Total Security : Consistently achieves top-tier malware detection rates with minimal system drag (though heavy full-system scans can use CPU).
• Surfshark Antivirus : A lightweight newcomer bundled with their VPN service (Surfshark One ) that offers remarkably fast scan times and low resource usage.
• TotalAV : Highly user-friendly with great web-filtering and cleanup tools, powered by a robust underlying malware engine.

To help narrow this down, tell me:

• What operating system are you using (Windows, Mac, Android)?
• Do you have specific security concerns (like frequent file downloads, a past infection, or business use)?