Jsn.donecore.net is a new computer virus. To be more precise, this is a popup which periodically appears in the window of your default browser whenever you go online to look for some information. The occurrence of this popup is explained by the activity of some adware program currently running on your computer. So, to remove jsn.donecore.net you will need to get rid of the adware program that causes its occurrence.
This is the screenshot of jsn.donecore.net in Internet Explorer browser:
The popup is related to the adware program called BetterSurf. Because of it users often see ads by BetterSurf in various sections of the browser's window, as well as plenty of so-called intext links which are emphasized with double underlining. So, whenever you move your computer mouse towards them you will see ads by BetterSurf popping up. This is when jsn.donecore.net window may pop up as well.
We do not doubt you're really fed up with all these ads by BetterSurf and jsn.donecore.net popups. To remove them all from your computer you need to do something that is not limited by simply uninstalling of this malware in a regular manner. In fact, you can't find the Uninstaller for jsn.donecore.net or Better Surf adware. Please follow the instructions below that will help you get rid of this computer infection automatically with the help of a full licensed version of GridinSoft Trojan Killer.