Win32:MBRoot-J [Trj] ? is a dubious detection, might be reported as false positive by several AV products. It occurs when your antivirus considers scripts of website you are visiting malicious and potentially able to load trojan horse into your PC. This extra preventive measure might be annoying. Some of the antivirus tools practicing the said routine completely deny access to websites, if they find them to have the trojan loading frame.
Indeed, this could be a real disastrous infection. Nature of the detection method does not restrict the infection by traits of functionality, hence whatever activity you can imagine (stealing banking credentials, inclusion of your PC into botnet etc.) are possible consequences of the malframe executing its payload.
There is another aspect though, where your AV solution does not ensure the website actually poses a challenge to your computer security as that would block your access to the online info you do need or like to have. The suggestion of this post is to get rid of Win32:MBRoot-J [Trj]? issue applying advanced method. It duplicates the common routine, but does not block website until promptly ensuring the code is actually malign.
Click here to remove Win32:MBRoot-J [Trj]? cyber disease on completing free scan, which is also the way to detect and exterminate every rogue in the memory of your PC.