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I programmed a $7 ESP32-S3 board to block all computer's web ads - and it took just minutes

ID: 049aaf03-9015-5fd4-a397-bc5f48e632b2

STIX ID: report--049aaf03-9015-5fd4-a397-bc5f48e632b2

Feed Name: ZDNet Security

Date Published: 2026-06-18

Date Updated: 2026-06-18

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**Executive summary:** This article explains how to use an ESP32-S3 board running ESP32_AdBlocker as an inexpensive DNS sinkhole ad-blocker, detailing hardware and software requirements, setup steps with the Arduino IDE, configuring DNS on client devices, limitations (e.g., YouTube ads and IPv6), and alternatives such as Pi-hole on Raspberry Pi.

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