Approximately Half a Million Routers infected with “VPNFilter” Malware. Because they connect directly to the internet, routers make for easy targets. Accessing them takes little effort, and a majority of domestic or entry-level routers don’t include any protection against malware. Because updating a routers’ firmware takes a bit of tech-savvy, known vulnerabilities are often left un-patched by users. And it’s because of these few reasons above that cybercriminals were able to infect around half a million of these devices with a malware variant known as VPNFilter.