Developer reverse-engineers Coway purifier to bypass its cloud
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A developer reverse-engineered the Wi-Fi-enabled Coway Airmega IconS air purifier to reduce its reliance on Coway's IoCare cloud, and built a Home Assistant custom integration from the findings. The existing Home Assistant integration impersonates Coway's phone app, but the developer says it breaks repeatedly due to server bans, the IoCare to IoCare+ rebrand, HTML layout changes and outages. The interception work was done with a man-in-the-middle setup built with LLM assistance. The developer says a weak-key incident at certificate authority eMudhra in October 2026 opened a possible foothold for intercepting the device's traffic. Because the Home Assistant server has no Bluetooth and sits far from the fan, provisioning is done via Web Bluetooth from a laptop placed next to the purifier.
Generated from reports · updated 12 h ago
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- Hacker News · AIReverse Engineering a Coway Air Purifier to Ditch the Cloud
A developer reverse-engineered the Wi-Fi-enabled Coway Airmega IconS air purifier to cut its dependence on Coway's IoCare cloud, using a man-in-the-middle setup built with LLM assistance. The existing Home Assistant integration impersonates Coway's phone app but breaks repeatedly—server bans, an IoCare to IoCare+ rebrand, HTML layout changes, and outages—prompting the effort. A weak-key incident at certificate authority eMudhra in October 2026 opened a possible foothold for intercepting the device's traffic.
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