Virus Definitions Apps and Alternatives

21 applications in this hubLast updated: Nov 19th 2018, 09:50 GMT

Once installed, anti-malware applications have to be regularly updated with the latest definitions to be able to protect your computer from the newest threats, whether we're talking about ransomware, Trojans, spyware, rootkits, backdoors, or something else.

Most antivirus tools run these checkups automatically and frequently, so you don't have to worry about doing this yourself. However, many companies release virus definitions as separate, offline files, which can be manually downloaded by users.

This might seem unnecessary for those with a round-the-clock Internet connection since the automatic checkup mode should take care of everything in the background, but the virus definition packages can be used to update antimalware programs that don't have Internet access.

For this hub, we've carefully selected the virus definitions of antivirus tools with frequent updates, from daily to weekly and, in some rare cases, monthly. Most of them contain the date of last update in the program version, so you can easily spot the daily updates.

If you're not sure about which antivirus to use, you can check out our hubs with free antivirus and portable antivirus utilities. We also have hubs with apps designed to scan for viruses, along with small-sized tools made to uninstall antivirus products.

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Applications

     
  • 372,168 downloads
  • 148 MB
Windows Defender Definition Updates

Windows Defender Definition Updates November 19, 2018

Install the latest Windows Defender definition updates and make sure your computer is safe from vi...

Nov 19th 2018, 05:53 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 355,498 downloads
  • 148 MB
Microsoft Security Essentials Definition Updates

Microsoft Security Essentials Definition Updates November 19, 2018

Manually install the latest antivirus definitions for Microsoft Security Essentials in case your c...

Nov 19th 2018, 05:53 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit
     
  • 533,764 downloads
  • 166 MB
Avast Virus Definitions VPS

Avast Virus Definitions VPS November 19, 2018

The latest virus definitions for your Avast antivirus, providing an alternative method to keep the...

Nov 19th 2018, 09:35 GMT
Windows All
     
  • 2,602,772 downloads
  • 148 MB
AVG Anti-Virus Definitions

AVG Anti-Virus Definitions August 14, 2018

The latest free virus definitions for AVG Antivirus, which you can use to perform manual updates i...

Aug 14th 2018, 07:36 GMT
Windows All
     
  • 16,490,682 downloads
  • 71 MB
Avira Antivir Virus Definitions for Avira 10 and Older

Avira Antivir Virus Definitions for Avira 10 and Older November 19, 2018

Download the virus definitions file to easily always keep versions 10 and older of the popular Avi...

Nov 19th 2018, 07:36 GMT
Windows All
     
  • 380,933 downloads
  • 272 MB
BitDefender Virus Definitions

BitDefender Virus Definitions November 16, 2018

The latest virus definitions for BitDefender Antivirus, BitDefender Antivirus Plus and BitDefender...

Nov 16th 2018, 09:51 GMT
Windows All
     
  • 103,046 downloads
  • 15.5 MB
Malwarebytes Anti-Malware Database

Malwarebytes Anti-Malware Database 2018-11-08

The files you need to keep Malwarebytes Anti-Malware up-to-date in case your computer is no longer...

Nov 13th 2018, 12:55 GMT
Windows XP / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 3,931,738 downloads
  • 64.8 MB
Norton AntiVirus Virus Definitions

Norton AntiVirus Virus Definitions November 18, 2018

Signature packages containing the latest free virus databases for various Symantec antivirus softw...

Nov 19th 2018, 08:08 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 3,558,188 downloads
  • 119 MB
McAfee Virus Definitions

McAfee Virus Definitions November 18, 2018

Download McAfee virus pattern and engine updates and make sure that your McAfee antivirus can prot...

Nov 19th 2018, 08:04 GMT
Windows All
     
  • 244,294 downloads
  • 7.04 MB
Spybot Search and Destroy Detection Update

Spybot Search and Destroy Detection Update 2018-10-10

Update the definitions of your Spybot - Search and Destroy manually without requiring the WebUpdat...

Oct 10th 2018, 11:16 GMT
Windows All
     
  • 153,677 downloads
  • 54.1 MB
Trend Micro Virus Pattern File

Trend Micro Virus Pattern File November 18, 2018

A collection of Virus Pattern Files that are updated to their latest virus database definitions an...

Nov 19th 2018, 05:42 GMT
Windows All / Unix
     
  • 116,485 downloads
  • 317 MB
Vipre Definition Files

Vipre Definition Files November 18, 2018

Keep Vipre up-to-date with the latest definition files by manually installing the required package...

Nov 19th 2018, 05:19 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 94,171 downloads
  • 48.4 MB
ClamAV Virus Databases

ClamAV Virus Databases 19 November 2018 Daily / 3 Mar 2018 Main / 7 Dec 2017 Bytecode

The up-to-date virus signature files for the ClamAV antivirus, which can be downloaded in case the...

Nov 19th 2018, 08:04 GMT
Windows All
     
  • 55,953 downloads
  • 262 MB
Bitdefender 2008 Virus Definitions

Bitdefender 2008 Virus Definitions November 2, 2018

Manually update the definitions of the following Bitdefender products: Total Security 2008, Intern...

Nov 2nd 2018, 04:43 GMT
Windows All
     
  • 69,191 downloads
  • 28.7 MB
SUPERAntiSpyware Database Definitions Update

SUPERAntiSpyware Database Definitions Update November 19, 2018

Keep SUPERAntiSpyware up-to-date with the latest definitions even if your computer is not connecte...

Nov 19th 2018, 06:03 GMT
Windows XP / Windows Vista / Windows 7 / Windows 8 / Windows 10
     
  • 52,414 downloads
  • 184 MB
Ikarus Engine Update

Ikarus Engine Update November 19, 2018

Manually update Ikarus Virus Utilities and T3 Command Line Scanner by using this file that provide...

Nov 19th 2018, 09:50 GMT
Windows All
     
  • 269,249 downloads
  • 363 MB
F-Secure Virus Definitions

F-Secure Virus Definitions November 19, 2018

Contains the latest virus definitions for the F-Secure product line, including Workstation, Antivi...

Nov 19th 2018, 05:27 GMT
Windows All
     
  • 8,813 downloads
  • 112 MB
ClamWin Free Antivirus Definition Files

ClamWin Free Antivirus Definition Files 19 November (Daily) 2018 / 3 Mar (Main) 2018

Keep your ClamWin Free Antivirus definition database up to date by manually adding database files ...

Nov 19th 2018, 08:04 GMT
Windows All
     
  • 1,187 downloads
  • 253 MB
REVE Virus Signature Updates

REVE Virus Signature Updates 9 February 2018

Keep REVE Antivirus, Internet Security and Total Security up to date with the latest virus definit...

Mar 6th 2018, 20:31 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 136,812 downloads
  • 1.4 GB
Quick Heal Virus Database

Quick Heal Virus Database 17.00 (15 November 2018)

Daily signature and virus definitions updates for your Quick Heal products, allowing the manual up...

Nov 19th 2018, 08:09 GMT
Windows 2K / Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 2003 / Windows 2008 / Windows 2008 64 bit / Windows 2008 R2 / Windows Server 2012 / Windows 10 / Windows 10 64 bit
     
  • 12,991 downloads
  • 416 MB
Comodo Anti-Malware Database

Comodo Anti-Malware Database 18-November-2018

Update your Comodo Antivirus or Internet Security database to its latest version by using this pac...

Nov 19th 2018, 05:50 GMT
Windows XP / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit