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#iot

Security challenges and solutions for Internet of Things and embedded devices.

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ESP32 upload errors decoded: 'Failed to connect', 'Wrong boot mode detected' and friends

ESP32 upload errors decoded: 'Failed to connect', 'Wrong boot mode detected' and friends

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3 min read
WebUSB and Serial API

WebUSB and Serial API

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9 min read
Logging Aquarium Water Temperature with a Raspberry Pi, a DS18B20 and ~60 Lines of Python

Logging Aquarium Water Temperature with a Raspberry Pi, a DS18B20 and ~60 Lines of Python

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5 min read
KGUARD DVR CVE-2026-87827: an unauthenticated command service that never should have faced the internet

KGUARD DVR CVE-2026-87827: an unauthenticated command service that never should have faced the internet

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3 min read
Sizing the Industrial Control Surface: What 41,601 Reachable EtherNet/IP Endpoints Tell Us About OT Exposure

Sizing the Industrial Control Surface: What 41,601 Reachable EtherNet/IP Endpoints Tell Us About OT Exposure

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4 min read
ESP32-C3 water monitor for a turtle tank: temperature, TDS and clarity, straight into Home Assistant with ESPHome

ESP32-C3 water monitor for a turtle tank: temperature, TDS and clarity, straight into Home Assistant with ESPHome

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9 min read
Turn a PZEM-004T + Raspberry Pi into a Full Energy Monitor — No SSH, No Docker, One Click

Turn a PZEM-004T + Raspberry Pi into a Full Energy Monitor — No SSH, No Docker, One Click

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11 min read
Deye Cloud API to a Daily Solar Report With Bedrock

Deye Cloud API to a Daily Solar Report With Bedrock

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8 min read
Why Kenyans Still Type 20-Digit Tokens in 2026: The Split Metering Reality and the Auto-Load Bottleneck

Why Kenyans Still Type 20-Digit Tokens in 2026: The Split Metering Reality and the Auto-Load Bottleneck

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4 min read
Building an Asset Tracking System That Turns Events Into Actions published: true tags: architecture, iot, backend, systemdesign

Building an Asset Tracking System That Turns Events Into Actions published: true tags: architecture, iot, backend, systemdesign

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6 min read
Your Camera Phone Asks for Its Address Back Every Few Hours. Here Is the Conversation.

Your Camera Phone Asks for Its Address Back Every Few Hours. Here Is the Conversation.

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6 min read
The geofence computed on the fly

The geofence computed on the fly

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6 min read
Binding to 0.0.0.0: the design decision behind CVE-2026-87827

Binding to 0.0.0.0: the design decision behind CVE-2026-87827

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2 min read
CVE-2026-87827 and the botnet supply chain behind cheap DVR hardware

CVE-2026-87827 and the botnet supply chain behind cheap DVR hardware

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2 min read
Interfacing an Industrial Laser Distance Sensor with Raspberry Pi via Python

Interfacing an Industrial Laser Distance Sensor with Raspberry Pi via Python

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3 min read
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