---
title: Steal data by recording LED lights
date: "2002-03-08T12:00:00Z"
categories:
  - links
wp_id: 1410
description: I discovered research showing how data can be stolen by recording the flickering of LED status lights on modems or routers. This side-channel attack uses optical sensors to capture information remotely without any physical connection to the target.
keywords: [side-channel attack, led snooping, optical eavesdropping, hardware security, data exfiltration, privacy]
---

Who'd have thought that you could [steal data by recording LED lights](http://www.cnn.com/2002/TECH/ptech/03/07/led.snooping.reut/index.html)!