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Security Software for Windows

The Security Software category is your source for antivirus, anti-spyware, and encryption apps. Download.com's extensive collection of security software is designed to safeguard your online activity.
Avast Free Antivirus 2016

Avast Free Antivirus 2016
Free

Avast Free Antivirus 2016

Stay safe from viruses, malware, spyware, and hackers.

Free
Editors' rating
User rating
Publisher: AVAST Software Downloads: 386,516,949
Malwarebytes Anti-Malware Free

Malwarebytes Anti-Malware Free
Free

Malwarebytes Anti-Malware Free

Detect and quickly remove malicious threats to your computer.

Free
Editors' rating
User rating
Publisher: Malwarebytes Downloads: 140,312,256
AVG AntiVirus Free

AVG AntiVirus Free
Free

AVG AntiVirus Free

Protect your computer from viruses and malicious programs.

Free
Editors' rating
User rating
Publisher: AVG Technologies Downloads: 560,639,920
IObit Malware Fighter

IObit Malware Fighter
Free

IObit Malware Fighter

Scan and remove malware from your system.

Free
User rating
Publisher: IObit Downloads: 19,402,282
RoboForm

RoboForm
Free to try

RoboForm

Login everywhere automatically, so you'll never need to remember or type your passwords again.

Free to try
Editors' rating
User rating
Publisher: Siber Systems Downloads: 27,464,433
Panda Free Antivirus 2016

Panda Free Antivirus 2016
Free

Panda Free Antivirus 2016

Protect your PC against viruses, spyware, rootkits, and Trojans.

Free
User rating
Publisher: Panda Security Downloads: 10,944,928
Spybot - Search & Destroy

Spybot - Search & Destroy
Free

Spybot - Search & Destroy

Search your hard disk and Registry for threats to your security and privacy.

Free
Editors' rating
User rating
Publisher: Safer-Networking Downloads: 126,568,203
Avira Free Antivirus

Avira Free Antivirus
Free

Avira Free Antivirus

Protect and secure your data with award-winning malware protection.

Free
Editors' rating
User rating
Publisher: Avira Downloads: 146,842,065
Hotspot Shield

Hotspot Shield
Free

Hotspot Shield

Unblock Web sites to access videos and social networks while keeping your activities private.

Free
Editors' rating
User rating
Publisher: AnchorFree Downloads: 30,064,749
Ad-Aware Free Antivirus +

Ad-Aware Free Antivirus +
Free

Ad-Aware Free Antivirus +

Protect your personal computer against virus and spyware attacks.

Free
Editors' rating
User rating
Publisher: Lavasoft Downloads: 391,485,655
Results 1 - 10 of 6,912

About Security Software

The Security Software category is your source for antivirus, anti-spyware, and encryption apps. Download.com's extensive collection of security software is designed to safeguard your online activity.