It can be either easy or hard to remove malware once it's taken over your computer.
First, you would scan your computers with a scanning program made for malware detection. Second, attempt to remove the threat manually, if you see a suspicious file, delete it. If you can't locate the threat, it is critical to contact a professional who can find ways to remove the threat and salvage any loss. Third, find a quality anti-malware software that will combat the latest threats and offers effective prevention tactics.