NarkNet

Nark [verb] slang - to serve or behave as a spy or informer
Net [noun] a computer network
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Examples of innocent people being prosecuted for network traffic on their open Wi-Fi network .

Unsecured Routers Land People in a Heap of Police Trouble

Copyright Infringement Liability and Your IP Address

Free Wi-Fi Threatened by Porn Maker's Lawsuit

WiFi users guard their own networks, happy to use others