The best antivirus software 2024: Tested and reviewed

Best antivirus software
(Image credit: Shutterstock)

In an online world awash with hackers, cybercriminals and stalkers, getting the best antivirus protection for your Windows 10 or Windows 11 computers has never been more important. The right security suite can not only help keep you free of viruses and make your communications more secure but can also keep your PC protected from a variety of cyberattacks.

Even though Windows Defender, which comes pre-installed on every Windows computer, has improved significantly over the years, its defenses are scattered among half a dozen apps and it just can’t beat the extra protection offered by its top competitors. That’s because keeping your PC clear of viruses with outstanding antivirus services is just the start these days. Those in the upper echelon of security suites can “rollback” files encrypted by ransomware, perform nightly backups and even use AI to separate what’s dangerous and what’s not.

Of the antivirus software on this list, those that achieved four stars or more stood out from the crowd by providing access to extra protection from a password manager to the ability to hide your online activities with a VPN. Others went a step further by protecting your identity, offering to back up your files and making inconvenient ones completely disappear.

We’ve tested and reviewed the best antivirus software solutions to see how easy they were to install, how well these programs can protect you and your data and how much they impact system performance. The best do all well while providing peace of mind that your computers will remain protected and virus-free.

The top 3 best antivirus brands

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1. Norton packs in everything but the kitchen sink

1. Norton packs in everything but the kitchen sink
Norton's antivirus products offer a password manager, unlimited VPN data, identity theft protection, parental controls and even online storage. If you're willing to pay, you'll get almost every kind of digital security you could ever need.

2. Bitdefender offers the best value in antivirus software

2. Bitdefender offers the best value in antivirus software
Bitdefender Antivirus Plus combines great malware protection with an assortment of useful features and an easy-to-use interface, all at a very affordable price.

3. McAfee offers bargains for big families

3. McAfee offers bargains for big families
McAfee's Antivirus Plus and Total Protection Plus bundles protect up to 10 devices at a reasonable price, while its Total Protection Ultimate has every feature you'd want.

The quick list

Reviewed and Tested by
Brian Nadel
Reviewed and Tested by
Brian Nadel

With experience in testing, using and evaluating all manner of security tools, Brian Nadel has tried out and reviewed all of the major antivirus software suites over the years. He likes digging into all of their features and useful extras to see what was added or removed with each subsequent release. Brian has been testing and reviewing security software for Tom's Guide for the past 15 years but he also covers Wi-Fi routers and home networking too.

The best antivirus software you can buy today

The best antivirus software overall

Best internet security suites: BitdefenderEditor's Choice

(Image credit: Bitdefender)
Excellent protection with plenty of extras

Specifications

Windows compatibility: Windows 7 to 11
Anti-theft: Yes
Backup software: No
File encryption: No
File shredder: Yes
Firewall: Yes
Game mode: Yes
Hardened browser: Yes
Parental controls: Yes
Password manager: Yes
Ransomware rollback: Yes
Performance scanner: No
Ransomware Rollback: Yes
System optimizer: Yes
Webcam protection: Yes
Virtual keyboard: Yes
VPN: Yes
Wi-Fi scanner: Yes
Support options: 4/7 phone, email, chat

Reasons to buy

+
Excellent malware protection
+
Loads of included tools like a VPN and parental controls
+
LifeLock identity protection with top tiers

Reasons to avoid

-
Heavy slowdown during full scans
-
Can get expensive

Bitdefender Total Security goes beyond the expected with top malware protection along with a slew of security-minded extras that make it the best choice for home users. Able to raise the security stance for any Windows system, Total Security is equally good at finding and eliminating existing threats as new ones. It can protect up to five computers for $100, while the minimalist Antivirus Plus can cover up to three computers for $60.

As complete as a security suite gets these days, Total Security has just about everything from a password manager, file shredder and secure browser to Web piracy software and an on-screen keyboard for hiding your login credentials; there’s add-on ID protection. On the downside, the included VPN is good for only 200MB per day.

Its ability to find and block malware is among the best with technology to stop suspect scripts, command line fileless attacks and memory exploits as well as preventing potentially unwanted applications (PUAs) and rootkits. If hit by encrypting ransomware, Total Security automatically copies the files under attack so that you have clean backup copies. It can also deliver an attack timeline for forensic analysis but the scanning engine extracts a moderate penalty on system performance.

If you’re looking for the most complete protection available today, Bitdefender Total Security is the one to get.

Read our full Bitdefender Total Security review

The best free antivirus software

Microsoft Defender review

(Image credit: MIcrosoft)
The cheapest and easiest way to secure your Windows PCs

Specifications

Windows compatibility: Windows 7 to 11
Anti-theft: Yes
Backup software: No
File encryption: No
File shredder: Yes
Firewall: Yes
Game mode: Yes
Hardened browser: Yes
Parental controls: Yes
Password manager: Yes
Ransomware rollback: Yes
Performance scanner: No
Ransomware Rollback: Yes
System optimizer: Yes
Webcam protection: Yes
Virtual keyboard: Yes
VPN: Yes
Wi-Fi scanner: Yes
Support options: 4/7 phone, email, chat

Reasons to buy

+
Nothing to install
+
Good malware protection
+
Overall security portal
+
Tamper resistant design
+
Upgrade included for Microsoft 365 subscribers

Reasons to avoid

-
High system demand during scanning
-
Some features only work with Microsoft products

Unlike other free AV programs, Microsoft Defender comes preinstalled on every Windows system made, ready to protect it when it’s first turned on. More than a slacker’s approach to security, Defender is for those who want a secure PC but don’t want to work at it.

Its protection is quite good but Defender can be a resource hog. It imposes a huge burden on the system’s performance potential, with the possibility of slowing a system down to a crawl.

Over the last several years, Defender has gone from a zero to a hero that’s on top of every malware trend these days from behavioral analysis to UEFI startup code protection to preventing fileless attacks. It has a memory integrity scanner, looks at incoming email attachments and can prevent an enterprising hacker from rewriting Windows code. Those with secrets can opt out of collecting viral samples from your computer.

Defender includes several security-minded ancillary features, but they often require an additional Microsoft product. For instance, there’s no local rollback ransomware tampered files, but with a Microsoft 365 account, the program periodically saves files online for recovery while Defender’s secure browser and password manager meld with the Edge browser. Fortunately, the Windows Security portal puts access to it all in one place, easing protection.

With effective protection that’s absolutely free of cost, effort and hassle, Defender has finally earned its name.

Read our full Microsoft Defender review

The best antivirus software for features

Norton 360 Deluxe

(Image credit: Norton)
Almost everything you could want in an online security suite

Specifications

Windows compatibility: Windows 7 to 11
Anti-theft: Yes
Backup software: No
File encryption: No
File shredder: Yes
Firewall: Yes
Game mode: Yes
Hardened browser: Yes
Parental controls: Yes
Password manager: Yes
Ransomware rollback: Yes
Performance scanner: No
Ransomware Rollback: Yes
System optimizer: Yes
Webcam protection: Yes
Virtual keyboard: Yes
VPN: Yes
Wi-Fi scanner: Yes
Support options: 24/7 phone, email, chat

Reasons to buy

+
Good malware protection
+
Unlimited VPN service available
+
Optional LifeLock ID identity protection

Reasons to avoid

-
No file shredder or file encryption
-
Too many false positive malware determinations

With seven main security products to choose from, picking the right version may be the hardest part of getting protection from Norton 360. The full-featured Norton 360 Deluxe stands out with all that most will need, including good malware protection, a password manager and a VPN with unlimited access. Able to defend five PCs for $120 a year, Norton’s entry-level AntiVirus Plus costs $60 for a single computer.

While its malware protection is better than most, Norton 360’s scanning engine saps too much of the system’s vital resources but can detect and destroy a wide variety of threats. More to the point, it came up with too many false positive determinations that safe software was dangerous.

Unlike most of its peers, Norton 360 Deluxe includes back-up software, which can be part of an effective defense against encrypting malware. The data can be stored locally or on Norton’s cloud servers with 50GB of space included.

What’s missing? Norton 360 Deluxe lacks the ability to destroy a file or encrypt it only for your eyes, but there’s the distinct advantage of being able to add LifeLock ID protection services and insurance. On the other hand, this can push the price of this program’s protection out of reach.

Read our full Norton 360 Deluxe review

The best antivirus software for value

Acronis Cyber Protect Home Office logo

(Image credit: Acronis)
Good value antivirus without all those unnecessary extras

Specifications

Windows compatibility: 7 to 11
Anti-theft: No
Backup software: Yes
File encryption: Yes
File shredder: Yes
Firewall: No
Game mode: No
Hardened browser: No
Parental controls: No
Password manager: No
Performance scanner: No
Ransomware rollback: Yes
System optimizer: No
Webcam protection: Yes
Virtual keyboard: No
VPN: No
Wi-Fi scanner: No
Support options: 24/7 phone, email, chat

Reasons to buy

+
Good value
+
Blockchain verified tasks
+
Lots of included tools and utilities

Reasons to avoid

-
No mobile apps
-
Can be resource heavy

Instead of starting with malware scanning technology and adding extras, Acronis built its Cyber Protect Home Office (CPHO) around its excellent backup software and fleshed it out with a variety of vital security services. It not only protects computers from potentially unwanted apps, fileless attacks and script-based and memory threats but CPHO’s anti-ransomware defenses can restore files that are under attack.

The program falls short of the mark by doing without security mainstays like a VPN, firewall and a password manager. It also lacks the ability to defend phones and tablets with mobile apps for Android and iOS systems.

As you might expect, Acronis excels at backing up computers with local and online storage. The CPHO plan not only includes 1TB of storage space for backups but can provide blockchain verified certificates of completion. There’s also a slew of helpful tools and utilities but they tend to be separate programs with different interfaces.

Finally, while others treat ID protection as an expensive add-on, the CPHO plan includes ID protection features and $1 million of insurance and identity restoration services. At $190 to protect three PCs CPHO is not only close to an all-in-one approach to security, but a big bargain.

Read our full Acronis Cyber Protect Home Office review

The best antivirus software for performance

ESET Smart Security Premium box art

(Image credit: ESET)
Very good malware protection that won't slow down your system

Specifications

Windows compatibility: 10/11
Anti-theft: Yes
Backup software: No
File encryption: Yes
File shredder: No
Firewall: Yes
Game mode: Yes
Hardened browser: Yes
Parental controls: Yes
Password manager: Yes
Performance scanner: No
Ransomware rollback: No
System optimizer: No
Webcam protection: Yes
Virtual keyboard: No
VPN: No
Wi-Fi scanner: Yes
Support options: 6 a.m. to 5 p.m. (PT) phone, email

Reasons to buy

+
Can buy a single license at a time
+
Good protection with small performance penalty
+
Useful security tools included

Reasons to avoid

-
Lacks unlimited plan
-
No file shredder or VPN

With good malware security and several useful security tools, ESET Smart Security Premium is a no-frills approach to defending a home’s computers that allows you to buy licenses one at a time as needed rather than wasting money by having to buy five or 10 packs. While the Smart Security Premium 10-pack costs $105, the basic NOD32 antivirus program costs $40 a year.

Smart Security Premium may not have a VPN or backup software, but the subscription includes a secure browser, webcam protection and a capable file encryption program. It can block phishing and script-based attacks while looking after the all-important Windows Unified Extensible Firmware Interface (UEFI) start-up code. There’re also innovative scanners for the Windows Registry and the Windows Management Instrumentation (WMI) repository.

The suite’s Ransomware Shield relies on advanced heuristic monitoring that aims to block threats before any damage is done. That said, the program doesn’t have file rollback in the event of an infection.

While all this protection might imply a heavy burden on the system’s operations, ESET’s takes the fast and light approach to Smart Security Premium. Its performance overhead during scanning was among the smallest we’ve seen with a tiny performance penalty. In other words, it's a good choice for those with older PCs to protect.

Read our full ESET Smart Security Premium review

The best antivirus software for families

McAfee software

(Image credit: McAfee)
Easy to use antivirus with unlimited licenses for many packages

Specifications

Windows compatibility: 10/11
Anti-theft: No
Backup software: No
File encryption: No
File shredder: Yes
Firewall: Yes
Game mode: Yes
Hardened browser: No
Parental controls: Yes
Password manager: Yes
Performance scanner: No
Ransomware rollback: No
System optimizer: Yes
Webcam protection: No
Virtual keyboard: No
VPN: Yes
Wi-Fi scanner: No
Support options: 24/7 phone, chat

Reasons to buy

+
Good protection
+
Easy interface to learn and use
+
Unlimited number of licenses for many packages

Reasons to avoid

-
Too many false positives
-
Heavy system impact during scans

With a simple, straightforward and easy to understand interface, McAfee+ Ultimate sets itself apart from the crowd of security suites. Descriptive with cute illustrations, it gets the job done without much in the way of effort, extra thought or anxiety.

Priced at $400 for a family, McAfee+ Ultimate might seem radically overpriced until you realize that it includes credit bureau monitoring, ID protection and $2 million in insurance. There’s also unlimited VPN access, a password manager and a file shredder. The best kept secret is that McAfee’s Family plans can protect an essentially unlimited number of computers, making them perfect for large digital clans.

McAfee’s Next Gen Threat Protection does the basics with viral signature matching that includes those that are close enough to be potentially dangerous. Meanwhile, AI Scam Protection uses machine learning techniques to counter malicious AI threats while the program can detect and counteract personalized emails and fake websites. Its Ransom Guard can be triggered by suspicious file changes to roll back fresh copies of infected files.

That said, its malware identification and elimination was among the best but with a heavy drain and too many false positives. It’s our choice for those who want protection from malware, hackers and identity thieves but don’t want to think about it.

Read our full McAfee+ Ultimate review

The best antivirus software for banking

Trend Micro

(Image credit: Trend Micro)

7. Trend Micro Maximum Security

Solid malware protection with a secure online browser included

Specifications

Windows compatibility: 8.1 to 11
Anti-theft: No
Backup software: No
File encryption: Yes
File shredder: Yes
Firewall: No
Game mode: Yes
Hardened browser: Yes
Parental controls: Yes
Password manager: Yes
Performance scanner: Yes
Ransomware rollback: Yes
System optimizer: Yes
Webcam protection: No
Virtual keyboard: No
VPN: Yes
Wi-Fi scanner: No
Support options: Business-hours phone, email, chat

Reasons to buy

+
Fast system scans
+
Adequate malware protection
+
Secure browser for online shopping

Reasons to avoid

-
Heavy performance hit during scans
-
Too many false positives on some tests

Although it delivers acceptable malware protection, Trend Micro’s Maximum Security plan is a paradox for security suites. Maximum Security has one of the lightest background burdens of all the programs we looked at while it's idle but that changes into one of the heaviest burdens during actual malware scanning. Thankfully the scanning is among the fastest around but this could potentially bog a computer down while Maximum Security is protecting it.

Priced at $150 to cover 10 systems, Trend Micro also has a simple Antivirus + Security that’s just $40 to provide basic protection for a single system. On the other hand, Maximum Security has the essentials for malware-free computing with defenses against things like memory and fileless attacks as well as phishing, tech-support scams and cryptocurrency-mining malware. Its Folder Shield protects key files from being encrypted by ransomware with the Documents, OneDrive and Pictures folders protected by default.

That said, Trend Micro goes beyond the basics with items like file encryption and shredding as well as a secure browser, while its password manager can hold all your log-in credentials but the program does without Webcam protection. If you can put up with its huge performance overhead during scanning, Maximum Security can protect with lightning fast scans.

Read our full Trend Micro Maximum Security review

The best antivirus software for fast scans

Best antivirus: Sophos Home Premium

(Image credit: Sophos)

8. Sophos Home Premium

An efficient and inexpensive antivirus with superfast scans

Specifications

Windows compatibility: 10/11
Anti-theft: No
Backup software: No
File encryption: No
File shredder: Yes
Firewall: Yes
Game mode: No
Hardened browser: No
Parental controls: Yes
Password manager: No
Performance scanner: No
Ransomware rollback: Yes
System optimizer: No
Webcam protection: Yes
Virtual keyboard: No
VPN: No
Wi-Fi scanner: Yes
Support options: Business-hours chat, email

Reasons to buy

+
Economical
+
Super fast scanning
+
Encrypts keyboard data
+
Good malware protection in third-party tests 

Reasons to avoid

-
Moderate performance penalty during scanning

When it comes to Sophos Home Premium, price is everything. Among the least expensive ways to protect home computers, the Home Premium package costs $60 a year for up to 10 systems – half as much as most of its competitors.

Home Premium does the basics well with the company’s enterprise grade Intercept X corporate security technology. It can not only block boot-sector malware and the Unified Extensible Firmware Interface (UEFI) startup exploits but fileless attacks as well. The program is on the look-out for threats to the Windows Encrypting File System (EFS) and locks down its own code.

The budget pricing is at the cost of leaving out foundational security techniques like file encryption and shredding, a secure browser and a password manager. The program does have webcam protection and has excellent remote capabilities with the ability to monitor and scan any connected computer protected by Home Premium.

Its malware identification and elimination is adequate although it’s among the fastest at sifting through a system for threats. On the downside, scanning inflicts a moderate performance penalty and leads to an annoying number of false positives.

It may not be perfect but Home Premium makes a value statement that’s hard to miss. It’s for those needing to protect computers on a tight budget.

Read our full Sophos Home Premium review

How to choose the best antivirus software for you

A woman looking at a smartphone while using a laptop

(Image credit: Shutterstock)

As is the case with other types of software, you need to choose Windows 10/11 antivirus programs according to both your needs and budget. The best bang for your buck comes from Sophos’s Home Premium at $60 to protect 10 systems, although it lacks several mainstays of security, like VPN access, password manager and a file shredder.

These issues are addressed with Bitdefender Total Security, which at $100 to defend five systems, is as complete as a security suite gets these days. On the downside, its VPN is only good for an inadequate 200MB a day of use.

If you have a little more money to spend, consider Norton 360 Deluxe. The suite offers unlimited VPN use as well as a password manager, backup software with online storage and optional LifeLock ID protection.

Seemingly doing the impossible, ESET’s Smart Security Premium combines security-minded extras and good protection at a small performance penalty. It can be economical because ESET sells licenses one at a time, not in five- or 10-packs.

McAfee+ Ultimate is not only the easiest security suite to set up and use but can include budget-priced ID protection services and insurance. Unlike the competition, the company’s Family plans can protect an unlimited number of devices

Meanwhile, Acronis Cyber Protect Home Office combines excellent backup software and online storage with blockchain verification of tasks. Its malware protection is complemented by Acronis’s included ID protection services that others charge extra for.

When speed is of the essence, Trend Micro’s Maximum Security can zip through a drive looking for threats that others might take too long to find.

How we test the best antivirus software

Lenovo ThinkPad T480

(Image credit: Tom's Guide)

We evaluated each antivirus program based on its interface, performance, protection, extra features and – above all – overall value.

After timing and rating the installation process’s ease, we looked at whether the interface was simple and straightforward, convoluted and difficult to grasp – or something in between. Next, we went through all the major and many minor features that each suite provides, including VPN access, file shredding and backup software, if included.

As far as performance goes, we measured how much the system slowed down while the program was scanning for malware using a Lenovo ThinkPad T470 with a 2.5GHz Core i5-7200U processor, 8GB of RAM and 256GB of solid-state storage containing 43.3GB of files. In order to gauge each program’s impact on system performance, we used our custom Excel test which measures how long a PC takes to match 20,000 names and addresses on a spreadsheet. The longer the task takes versus a baseline reading, the more the system performance is impacted.

For malware detection performance, we referred to results from tests conducted by three independent labs: AV-TEST in Germany, AV-Comparatives in Austria and SE Labs in England. Each lab periodically subjects major antivirus programs to stress tests that include thousands of pieces of malware as well as hundreds of “zero-day” samples that the software has to learn to recognize. We paid particular attention to false positive readings of safe software deemed dangerous by the program under review as an indication of the precision of the program’s scanning technology.

For more information, check out our how we test antivirus software and apps guide as well as our more general how we test page for Tom's Guide.

Brian Nadel

Brian Nadel is a freelance writer and editor who specializes in technology reporting and reviewing. He works out of the suburban New York City area and has covered topics from nuclear power plants and Wi-Fi routers to cars and tablets. The former editor-in-chief of Mobile Computing and Communications, Nadel is the recipient of the TransPacific Writing Award.