alleged $195,000 bitcoin fraud, 4 men wanted

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"?

Source of shared Link

---

---

_{Sponsored ( Powered by dclick )}