If there is a trojan on my computer, can it go undetected by my Anti-Virus software?

I have KasperSky Anti-Virus.

Virus or Trojans have many variants and some security programmes are up to date and some or not. The software vendor will update the definitions every time when they find any new variants and if the database of you antivirus was not updated in a regular then your antivirus shields will not aware of the new variants.

That is why there is a need of updating the virus definitions and some free editions will not have the in-depth virus signature files and there will be alot of difference in the free version and full version of software's.

Because I observed many free antivirus programmes that do not have full feature they don't detect the antivirus and then I installed a Trojan Remover trial version which I was benefited from it alot it detected alot threats where in as antivirus cannot.

So I come to know that a full version of antivirus works better than free version and so I suggest you to install the full version of antivirus it's better and so many links are available on the Internet and they say that are full version but one thing you need to they don't have official support from the software provider.

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Norton had a issue and now it removed itself from my laptop!?

OK so Norton had an error I don't remember it but I was told to download the removal tool it failed so now Norton is removed from my computer I really don't know what to do.... but before that I was working with HP support I restarted my computer but I cancelled the rebooting... :(

Actually I wanna know why you have downloaded the removal tool, If you want to uninstall you can go to control panel and remove it, but in this case no need of removal tool. May be you are using the trial version Norton Antivirus.

After downloading the tool may be the removal tool run in background so that Norton antivirus may be removed. You can check whether the Norton uninstalled or not, go to control panel, add/remove programmes and check the list if it is present there Norton not uninstalled fully and check the directories or folders where it is installed after if the Norton folders are present there the Norton antivirus present in your system partially.

After uninstalling if you restart your computer automatically, the directories, registry entries are removed from you PC. Better install a free antivirus like Avast, Avira...etc They provide good antivirus programmes.

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My laptop has spyware. Will buying an antivirus stop it?

I turned on the laptop and a warning came up saying I was detected with spyware and to call a number. I DIDN'T want to do that. I am not using any protection except for this free bit defender  How can I get rid of it? Will just an antivirus do?

Ya, your PC is infected with Malware and spyware, if you can afford buy the full version of internet security software. Any software company will provide the free version of software's but they have limited features. you need to know that infected with Malware might be infected with virus also.

Once try installing the avast free edition, I assure you it worked for me. It cleaned my system. But my opinion is select the good antivirus. Once try with avast free edition if you are impressed go and buy the full version of Avast Internet Security.

Buy the Norton Internet Security or Norton 360 because these products by the Symantec are awesome, I assisted my so many customers with Symantec. they also felt very good which worth the money. Till now I hear the good words from them regarding these Symantec software's.

Better install any security kind of software if you are connected or not connected to internet.

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