Recently discovered MaMi malware has the ability to modify DNS configuration of an infected device. DNS hijacking is easy to carry out, can be tough to detect, and is surprisingly damaging. DNSChanger may have infected more than 4 million computers, but there are likely still hundreds of thousands of infected computers on the Internet. Don’t allow arbitrary internal IP addresses on your enterprise network to send DNS queries to arbitrary IP addresses. If some of your internal devices become infected with malware that modifies their DNS configurations, they’ll simply stop resolving domain names.”]