Dysphoria, an Internet of Things (IoT) botnet line tracked by CNCERT and XLab, has adopted blockchain-based name services and infected-device relays after a March law-enforcement operation against JackSkid infrastructure. The researchers say the design makes the botnet harder to disrupt. CNCERT, China's national computer emergency response team, and XLab, the threat-intelligence lab of Chinese firm Qi'anxin, put its population above 200,000 bots. Their telemetry logged 4,401 confirmed active devices inside China between July 14 and 20 and a single-day peak of 239,000 bots abroad. None of the counts has been independently reproduced. The researchers published no counting or de-duplication methodology, so the numbers should not be read as a precise device census. Defenders should patch…