Honestly speaking you cannot stop any malware from attacking yourputer however you can make it difficult for the malware by doing the following. This list doesn guarantee 1% security therefore I suggest you to stay vigilant. Do not visit suspicious s ing in chat etc.) as often they are either phishing or redirecting to the site which servers malware. Keep back up of your critical data (may be in the cloud just for safe end). Do not open attachmentsing in email from random people (and sometimes even from known people). Most of the time malware gets served through a website or email attachments (word excel ppt and PDF). You can only find existing malware for removal or either stop iing malware in some cases. Unless you are the special target of any malware due to being POI (Person Of Interest) .