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2026-07-19
Clever hacker fits 537,000 domains in a tiny $5 ESP32 ad-blocking dongle
0.87
tomshardware.com
2026-07-19
Zak Killian
This project uses a clever hashing trick to fit over half a million blocked domains into just 4MB of flash memory.
ESP32
Ad-blocking
DNS filtering
Embedded systems
IoT
Open source
Cybersecurity
Hardware development
1