Antivirus Software Helps Shield Your Computer from Malware and Cybercriminals

Help protect your devices, private and financial information with the right antivirus software

Ready to safeguard your devices?
Get a 30-day free trial of Norton Security

Think you’re a victim of malware?
Download our free virus and malware removal tool

How antivirus software works

Antivirus software looks at the data—web pages, files, software, applications—traveling over the network to your devices. It searches for known threats and red-flags behavior to block or remove malware as quickly as possible. 


What is malware?

Malware (short for malicious software) is a program specifically engineered to compromise the security features on your computer or mobile device to give cybercriminals access to your personal data and, in some cases, commit identify theft.

Malware sneaks in through a hole in one of your software programs, hidden in an online ad or disguised as a legitimate app you download.

Learn More about Malware


Think you have a virus?

Review telltale signs and our 3-step cleanup plan.

ACT FAST. Malware can act like a beacon for more.

Which antivirus software is right for you?

Find the anti-cybercrime solutions designed to help protect your digital life.  

The best value in antivirus software is the solution that offers robust protection.

Norton Security delivers five-layer antivirus protection at industry-leading speeds.1

More PC Magazine Editors' Choice Awards Than Any Other Security Company

PC Magazine Editors’ Choice Award reprinted with permission. © 2017 Ziff Davis, Inc. All Rights Reserved. 39-Time Winner awarded in 2017.

Norton Security

Award-winning antivirus software and malware protection1

  • Helps shield your devices from viruses, ransomware and cybercriminals
  • Helps protect your private and financial information with award-winning security
  • Browse the web confidently knowing you’re protected from unsafe links, malicious downloads, and virus-ridden websites
  • Utilizes one of the largest global civilian intelligence networks to spot threats faster
  • Includes our Virus Protection Promise: We’ll help keep your device virus-free or give you a refund2
Frequently Asked Questions

Thousands of new viruses, trojans, and worms are created every day. Here are some of the most common ways this can happen:

  • Clicking on an intriguing pop-up ad which contains a trojan
  • Opening a malicious email attachment
  • Downloading a virus from a file-sharing program such as LimeWire
  • Your Norton software was not updated with the latest virus definitions
  • Your system was infected with malware before Norton was installed

Read More

The term, “virus” has been the commonplace word for all malicious software programs for years now; however, a virus is just one type of malicious threat. The threats on the cyber landscape have evolved into more than just viruses, and can cause much more damage than viruses can. All of the threats on the Internet landscape are types of malicious software, and therefore now fall under the umbrella term, “malware.”

Read More

Most of the time, the presence of malware will be obvious even though you might not know how it got on your device. In fact, most people have no idea that malware has been installed until their computers start acting funny. Computer security almost always begins with anti-virus/malware software. While this advice may be obvious to some, many home computers don’t have proper security software installed. Make this a priority on your home computer; it’s the best thing you can to do to avoid malware.

Read More

With public Wi-Fi available everywhere, what seems like a convenience can actually put you at risk. Free public Wi-Fi is a hacker’s playground for stealing personal information. One of the dangers of using a public Wi-Fi network is that data over this type of open connection is often unencrypted and unsecured, leaving you vulnerable to a man-in-the-middle (MITM) attack. Another risk of using free public Wi-Fi is that you may be connecting via a rogue hotspot. Once a victim connects to the rogue Wi-Fi hotspot, the host hacker can then intercept data and even use tools to inject malware into the connected devices.

Read More

“IoT” is an acronym for the “Internet of Things.” And any device that can connect to the Internet and transmit or receive data can be considered a “smart” thing. That includes smart homes, also known as connected homes. Smart homes — in which IoT devices such as thermostats or ovens can be programmed from anywhere — are popular with consumers who seek convenience. Some people, however, may not realize the connected devices or appliances they’ve grown to depend on could leak private information or be susceptible to hackers. In the rush to get products to market, smart device makers may not see security as a priority.

Read More

Norton Security covers PCs, Macs, Androids, iPads and iPhones. Some features are not available on iPad and iPhone.

Norton AntiVirus Basic covers a single PC.

Auto-scan of apps on Google Play is supported on Android 4.0 or later, except for Samsung devices. Samsung devices running Android 4.2 or later are supported. For earlier versions of Android, the Google Play “Share” function must be used to scan apps on Google Play.

Norton Family and Norton Family Premier features are not supported on Mac.

2 Virus Protection Promise: To be eligible for the Virus Protection Promise, you must have a qualifying Norton subscription and unless you have Norton Small Business, you must also have purchased, renewed or upgraded that Norton subscription directly from Symantec, or activate automatic renewal with Symantec. If a Norton expert is unable to remove the virus from your device, then you may receive a refund based on the actual price paid for the current term of your qualifying Norton subscription. If you purchase a Norton bundle (a qualifying Norton subscription purchased with another Norton offering), your refund will be limited to the Manufacturer’s Suggested Retail Price (MSRP) of your qualifying Norton subscription for the current term, not to exceed the total bundled price paid. Or, if your bundled purchase contains a qualifying Norton subscription with a non-Norton product, your refund will be limited to the Manufacturer’s Suggested Retail Price (MSRP) of only your Norton qualifying subscription for the current term, not to exceed the total bundled price paid. Any refund will be net of any discounts or refunds received and less any shipping, handling and applicable taxes, except in certain states and countries where shipping, handling and taxes are refundable. The refund does not apply to any damages incurred as a result of viruses. See for details including qualifying Norton subscriptions.