Police have released images showing four suspects wanted in connection with a $195,000 fraud that involved bitcoin ATMs in seven Canadian cities.
Police say the suspects committed “double-spend attacks” in which they withdrew money from a bitcoin kiosk and then remotely cancelled the transactions before the withdrawal was processed.
“All four suspects are described as men and are believed to have in-depth knowledge or interest in cryptocurrency, bitcoin and/or blockchain technology,” according to Toronto police.
Police are asking anyone who can identify the suspects to call the Calgary Police Service at 403-266-1234, regardless of where they live in, or contact Crime Stoppers if they wish to remain anonymous.
Is it even possible what they called "double-spend attacks"?
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