Internet-connected devices in our homes can make life more pleasant, but they can also provide access to online non-wells. The jokers couple took a Chromecast hacking campaign allegedly to warn people of their vulnerability. Although, they also promote PewDiePie for some reason.
While hackers known as HackerGiraffe and j3ws3r have decided to penetrate into Chromecast, the lack is not a technical part of that device. They use technology in many routers called UPnP (Universal Plug and Play), which can allow external access to devices on your network. Without appropriate security measures, someone you do not know can also gain access. HackerGiraffe and j3ws3r used UPnP to display a warning message (see above) for vulnerability, followed by a plain proposal that you subscribed to the video streamer PewDiePie. Should you not think that both are simply useful, the URL in the warning is Rickroll.
The hack site (currently down) included a counter that showed that more than 3,000 devices were downloaded with a warning. According to the site (and common sense), the best way to prevent such attacks is to disable UPnP in your router settings. In a similar trick last November, HackerGiraffe and j3ws3r hijacked the related printers to print sites that advertise PewDiePie. At present, the driver is in danger of being overtaken from the India-based T-Series, as the top YouTube subscriber bill. Obviously, this is something that gets Hacker Giraffe and Jvsvr very much awake.