Jsn.donecore.net is a notorious computer virus which is classified as adware family. When invades into the target PC, Jsn.donecore.net will firstly create lots of unstopped pop-up ads to annoy computer users. You should be careful not to click these ads as these ads are always related to the hijacked websites, once you have clicked them, you will be redirected to those unknown sites.
Besides producing annoying advertisements, Jsn.donecore.net adware also disturb computer users by undertaking other malicious tasks. It will alter the system setting without authorized such as add its files to the startup menu that makes it get stated automatically when computer users boot the infected PC. It also degrades computer performance by running in the background to eat up a lot of computer sources.
Moreover, Jsn.donecore.net adware mess up the system security which offers a chance for other kinds of computer viruses to invade into the compromised PC more easily.