Change log for definition version 1.279.1506.0 RSS feed icon

This page lists what has changed in the most recent definitions update for Windows Defender Antivirus and Microsoft Security Essentials.

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The following tables list the new and updated definitions for the version you select here. You can choose from the 20 latest updates, and the most recent update is shown by default:

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Definition available date: Nov 09,2018 05:13 PM UTC

New definitions


No new threats have been identified in this definition update.

Updated definitions

Adware:Win32/BetterSurfhigh
HackTool:Win32/AutoKMS!rfnhigh
SoftwareBundler:Win32/Dlhelperhigh
TrojanDownloader:Win32/Adload!rfnhigh
Backdoor:Linux/Mirai!rfnsevere
Backdoor:MSIL/Bladabindi!rfnsevere
Backdoor:MSIL/Noancooe.Asevere
Backdoor:MSIL/Noancooe.Bsevere
Backdoor:MSIL/Noancooe.Csevere
Backdoor:MSIL/Sisbot!rfnsevere
Backdoor:Win32/AgentTesla.B!MTBsevere
Backdoor:Win32/Bifrosesevere
Backdoor:Win32/CoinMiner.Asevere
Backdoor:Win32/Kirts!rfnsevere
Backdoor:Win32/Tofsee!rfnsevere
Backdoor:Win32/Zegost!rfnsevere
DDoS:Linux/Lightaidra!rfnsevere
Exploit:HTML/IframeRef!rfnsevere
Exploit:Win32/RpcDcom!rfnsevere
PWS:Win32/Fareitsevere
PWS:Win32/Mofksys!rfnsevere
PWS:Win32/Primarypass.Asevere
Ransom:Win32/Lockysevere
Ransom:Win32/Reveton.gen!Asevere
SupportScam:JS/TechBrolo!rfnsevere
Trojan:JS/HideLink!rfnsevere
Trojan:JS/Iframe!rfnsevere
Trojan:JS/Iframeinject!rfnsevere
Trojan:JS/Redirector!bitsevere
Trojan:JS/Redirector!rfnsevere
Trojan:MSIL/Camru!rfnsevere
Trojan:MSIL/Ribaj!rfnsevere
Trojan:MSIL/Wooniky!rfnsevere
Trojan:O97M/Obfuse!rfnsevere
Trojan:Win32/Adload!rfnsevere
Trojan:Win32/Aenjaris!rfnsevere
Trojan:Win32/Asacky.A!bitsevere
Trojan:Win32/Bancteian!rfnsevere
Trojan:Win32/Bluteal!rfnsevere
Trojan:Win32/Casdet!rfnsevere
Trojan:Win32/CoinMiner!rfnsevere
Trojan:Win32/CoinMiner.DAsevere
Trojan:Win32/CryptInject!rfnsevere
Trojan:Win32/Donbot.Asevere
Trojan:Win32/Dynamer!rfnsevere
Trojan:Win32/Emotet.AC!bitsevere
Trojan:Win32/Eqtonex!rfnsevere
Trojan:Win32/Gandcrab.AFsevere
Trojan:Win32/Genasep.Asevere
Trojan:Win32/Horsum.Asevere
Trojan:Win32/Occamy.Asevere
Trojan:Win32/Occamy.Csevere
Trojan:Win32/Pynamer.B!acsevere
Trojan:Win32/Qhost!rfnsevere
Trojan:Win32/Rifbu!rfnsevere
Trojan:Win32/Salgorea!rfnsevere
Trojan:Win32/Salgorea.C!dhasevere
Trojan:Win32/Selfdel!rfnsevere
Trojan:Win32/Simbot!rfnsevere
Trojan:Win32/Skeeyah.A!rfnsevere
Trojan:Win32/Sodebral.Asevere
Trojan:Win32/Suloc.Asevere
Trojan:Win32/Urelas!rfnsevere
Trojan:Win32/Vibem!rfnsevere
Trojan:Win32/Vindor!rfnsevere
Trojan:Win64/Alureon!rfnsevere
TrojanClicker:HTML/Iframe!rfnsevere
TrojanClicker:JS/Faceliker!rfnsevere
TrojanClicker:Win32/Spackit.Asevere
TrojanDownloader:JS/FakejQuery!rfnsevere
TrojanDownloader:JS/Nemucod!rfnsevere
TrojanDownloader:O97M/Donoffsevere
TrojanDownloader:Win32/Calcapov.A.dllsevere
TrojanDownloader:Win32/Nymaim!rfnsevere
TrojanDownloader:Win32/Renossevere
TrojanDownloader:Win32/Sinresby.Bsevere
TrojanSpy:Win32/Usteal!rfnsevere
VirTool:Win32/CeeInjectsevere
VirTool:Win32/Dofoil!rfnsevere
Worm:MSIL/Ainslot.Asevere
Worm:Win32/Ainslot!rfnsevere
Worm:Win32/Ainslot.Asevere
Worm:Win32/Copali.Bsevere
Worm:Win32/Dorkbotsevere
Worm:Win32/Fesber!rfnsevere
Worm:Win32/Gamarue!rfnsevere
Worm:Win32/Mofksyssevere
Worm:Win32/Mofksys!rfnsevere
Worm:Win32/Mydoom!rfnsevere
Worm:Win32/Phorpiex.Bsevere
Worm:Win32/Rebhipsevere
Worm:Win32/Rebhip.Vsevere
Worm:Win32/Sfone!rfnsevere
Worm:Win32/Sfone.Asevere
Worm:Win32/SillyShareCopysevere
Worm:Win32/Xemasevere