We've been investigating a small number of households with improperly configured networks, such that Sonos players and other devices become accessible from the Internet, and someone instigated a prank to play a message in support of YouTube star PewDiePie on those systems.
This prank is not confined to Sonos, and if a network is set up wrong, household devices may be listed on the public internet, including printers, computers, or smart home devices.
For Sonos devices specifically, the prank allowed unauthorized playback of an audio track. In all cases we have investigated so far, customers experiencing this issue had their Sonos systems inadvertently exposed to the internet due to a router misconfiguration.
We encourage all Sonos users to make sure they are following best practices for securing their home networks and to turn on automatic updates. Best practices include securing their home networks with unique passwords on routers and wireless networks, turning on firewalls, and ensuring caution when making internal devices publicly available, such as through port forwarding or another protocol.
We are supporting customers on an ongoing basis to help configure their home systems. Our customer care team
is available to assist anyone who believes they may have been targeted by this prank.