One of Google’s Android partners turned 1.3 million set-top boxes into a botnet

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One of Google’s Android partners turned 1.3 million set-top boxes into a botnet

TL;DR

  • Google discovered that Videostrong Technology, an Android manufacturing partner, secretly built a backdoor into 1.3 million devices, creating a botnet.
  • The infected devices were used for malicious purposes including ad fraud, data exfiltration, and unauthorized network traffic routing.
  • Videostrong allegedly monetized the backdoor by selling access to criminal affiliates and loading their malware modules.
  • The malware was built into many different device models and brands over multiple years, primarily Android TV set-top boxes, but also other IoT devices.
  • Google has dismantled the botnet, cut ties with Videostrong, and made changes to its review process for device manufacturers.
  • Google estimates that taking down the affiliate C2 domains will sever access to at least 10 million additional compromised devices.