Consumer security software providers


Install and update security software to help protect your computer from viruses and other threats.


Hackers and scammers sometimes use fake antivirus programs to trick you into installing viruses or malware on your computer. The companies listed below provide safe consumer security software that is compatible with Windows. Just click the company name to see the Windows-compatible product they offer. For business security software that is compatible with Windows, please contact your security vendor of choice.

Many companies, including those listed on this page, distribute antivirus programs. You should carefully investigate the source of antivirus and other products before downloading and installing them.

If you’re running Windows 8 or Windows 8.1, you’ve already got Windows Defender built in. For information see Find out how to protect a Windows 8 or Windows 8.1 PC.

Important: Before you install antivirus software, check to make sure you don't already have an antivirus product on your computer. If you do, be sure to remove the product you don't want before you install the new one. It can cause problems on your computer to have two different antivirus products installed at the same time.


Ad-Aware
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avast!
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AVG Technologies
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Avira GmbH
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Bitdefender
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BullGuard
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CharityAntivirus
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Comodo
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Dr.Web
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Emsisoft
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G Data
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Kaspersky Lab
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McAfee
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Microsoft Security Essentials
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MYSecurityCenter
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Norton by Symantec
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Panda Security
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PC Pitstop
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Preventon
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Qihoo 360 Technology Co., Ltd
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Quick Heal
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Tencent PC Manager
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ThreatTrack Security
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TrustPort, a.s.
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UnThreat
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